An abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.
Surgical shunt allowing direct passage of blood from an artery to a vein. (From Dorland, 28th ed)
Abnormal communication most commonly seen between two internal organs, or between an internal organ and the surface of the body.
Congenital, inherited, or acquired abnormalities involving ARTERIES; VEINS; or venous sinuses in the BRAIN; SPINAL CORD; and MENINGES.
An abnormal anatomical passage between the INTESTINE, and another segment of the intestine or other organs. External intestinal fistula is connected to the SKIN (enterocutaneous fistula). Internal intestinal fistula can be connected to a number of organs, such as STOMACH (gastrocolic fistula), the BILIARY TRACT (cholecystoduodenal fistula), or the URINARY BLADDER of the URINARY TRACT (colovesical fistula). Risk factors include inflammatory processes, cancer, radiation treatment, and surgical misadventures (MEDICAL ERRORS).
The outermost of the three MENINGES, a fibrous membrane of connective tissue that covers the brain and the spinal cord.
A method of hemostasis utilizing various agents such as Gelfoam, silastic, metal, glass, or plastic pellets, autologous clot, fat, and muscle as emboli. It has been used in the treatment of spinal cord and INTRACRANIAL ARTERIOVENOUS MALFORMATIONS, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumors, traumatic rupture of blood vessels, and control of operative hemorrhage.
An abnormal passage or communication leading from an internal organ to the surface of the body.
Large endothelium-lined venous channels situated between the two layers of DURA MATER, the endosteal and the meningeal layers. They are devoid of valves and are parts of the venous system of dura mater. Major cranial sinuses include a postero-superior group (such as superior sagittal, inferior sagittal, straight, transverse, and occipital) and an antero-inferior group (such as cavernous, petrosal, and basilar plexus).
An abnormal passage or communication between a bronchus and another part of the body.
An abnormal passage between two or more BLOOD VESSELS, between ARTERIES; VEINS; or between an artery and a vein.
An abnormal anatomical passage connecting the RECTUM to the outside, with an orifice at the site of drainage.
Therapy for the insufficient cleansing of the BLOOD by the kidneys based on dialysis and including hemodialysis, PERITONEAL DIALYSIS, and HEMODIAFILTRATION.
Abnormal passage communicating with the STOMACH.
An abnormal passage in any part of the URINARY TRACT between itself or with other organs.
An irregularly shaped venous space in the dura mater at either side of the sphenoid bone.
Abnormal passage communicating with the ESOPHAGUS. The most common type is TRACHEOESOPHAGEAL FISTULA between the esophagus and the TRACHEA.
Large veins on either side of the root of the neck formed by the junction of the internal jugular and subclavian veins. They drain blood from the head, neck, and upper extremities, and unite to form the superior vena cava.
Veins draining the cerebrum.
Abnormal passage in any organ of the biliary tract or between biliary organs and other organs.
The vessels carrying blood away from the capillary beds.
The degree to which BLOOD VESSELS are not blocked or obstructed.
Abnormal passage communicating with the PANCREAS.
An abnormal anatomical passage between the RECTUM and the VAGINA.
Radiography of blood vessels after injection of a contrast medium.
An abnormal anatomical passage between the URINARY BLADDER and the VAGINA.
An abnormal passage communicating between any component of the respiratory tract or between any part of the respiratory system and surrounding organs.
An abnormal anatomical passage that connects the VAGINA to other organs, such as the bladder (VESICOVAGINAL FISTULA) or the rectum (RECTOVAGINAL FISTULA).
Arteries which supply the dura mater.
Radiography of the vascular system of the brain after injection of a contrast medium.
Abnormal passage between the ESOPHAGUS and the TRACHEA, acquired or congenital, often associated with ESOPHAGEAL ATRESIA.
The compartment containing the inferior part and anterior extremities of the frontal lobes (FRONTAL LOBE) of the cerebral hemispheres. It is formed mainly by orbital parts of the FRONTAL BONE and the lesser wings of the SPHENOID BONE.
Catheters designed to be left within an organ or passage for an extended period of time.
An acquired or spontaneous abnormality in which there is communication between CAVERNOUS SINUS, a venous structure, and the CAROTID ARTERIES. It is often associated with HEAD TRAUMA, specifically basilar skull fractures (SKULL FRACTURE, BASILAR). Clinical signs often include VISION DISORDERS and INTRACRANIAL HYPERTENSION.
Penetrating wounds caused by a pointed object.
Abnormal formation of blood vessels that shunt arterial blood directly into veins without passing through the CAPILLARIES. They usually are crooked, dilated, and with thick vessel walls. A common type is the congenital arteriovenous fistula. The lack of blood flow and oxygen in the capillaries can lead to tissue damage in the affected areas.
The vein accompanying the femoral artery in the same sheath; it is a continuation of the popliteal vein and becomes the external iliac vein.
Congenital vascular anomalies in the brain characterized by direct communication between an artery and a vein without passing through the CAPILLARIES. The locations and size of the shunts determine the symptoms including HEADACHES; SEIZURES; STROKE; INTRACRANIAL HEMORRHAGES; mass effect; and vascular steal effect.
A vein on either side of the body which is formed by the union of the external and internal iliac veins and passes upward to join with its fellow of the opposite side to form the inferior vena cava.
Veins in the neck which drain the brain, face, and neck into the brachiocephalic or subclavian veins.
The direct continuation of the brachial trunk, originating at the bifurcation of the brachial artery opposite the neck of the radius. Its branches may be divided into three groups corresponding to the three regions in which the vessel is situated, the forearm, wrist, and hand.
An abnormal passage in the URINARY BLADDER or between the bladder and any surrounding organ.
The region of the upper limb in animals, extending from the deltoid region to the HAND, and including the ARM; AXILLA; and SHOULDER.
Abnormal communication between two ARTERIES that may result from injury or occur as a congenital abnormality.
The long large endothelium-lined venous channel on the top outer surface of the brain. It receives blood from a vein in the nasal cavity, runs backwards, and gradually increases in size as blood drains from veins of the brain and the DURA MATER. Near the lower back of the CRANIUM, the superior sagittal sinus deviates to one side (usually the right) and continues on as one of the TRANSVERSE SINUSES.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Obstruction of flow in biological or prosthetic vascular grafts.
Homopolymer of tetrafluoroethylene. Nonflammable, tough, inert plastic tubing or sheeting; used to line vessels, insulate, protect or lubricate apparatus; also as filter, coating for surgical implants or as prosthetic material. Synonyms: Fluoroflex; Fluoroplast; Ftoroplast; Halon; Polyfene; PTFE; Tetron.
The end-stage of CHRONIC RENAL INSUFFICIENCY. It is characterized by the severe irreversible kidney damage (as measured by the level of PROTEINURIA) and the reduction in GLOMERULAR FILTRATION RATE to less than 15 ml per min (Kidney Foundation: Kidney Disease Outcome Quality Initiative, 2002). These patients generally require HEMODIALYSIS or KIDNEY TRANSPLANTATION.
The venous trunk of the upper limb; a continuation of the basilar and brachial veins running from the lower border of the teres major muscle to the outer border of the first rib where it becomes the subclavian vein.
Disruption of structural continuity of the body as a result of the discharge of firearms.
The two large endothelium-lined venous channels that begin at the internal occipital protuberance at the back and lower part of the CRANIUM and travels laterally and forward ending in the internal jugular vein (JUGULAR VEINS). One of the transverse sinuses, usually the right one, is the continuation of the SUPERIOR SAGITTAL SINUS. The other transverse sinus is the continuation of the straight sinus.
Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.
The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.
Pathologic conditions which feature SPINAL CORD damage or dysfunction, including disorders involving the meninges and perimeningeal spaces surrounding the spinal cord. Traumatic injuries, vascular diseases, infections, and inflammatory/autoimmune processes may affect the spinal cord.
Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Pathological outpouching or sac-like dilatation in the wall of any blood vessel (ARTERIES or VEINS) or the heart (HEART ANEURYSM). It indicates a thin and weakened area in the wall which may later rupture. Aneurysms are classified by location, etiology, or other characteristics.
The main artery of the thigh, a continuation of the external iliac artery.
The condition of an anatomical structure's being constricted beyond normal dimensions.
Malformations of CORONARY VESSELS, either arteries or veins. Included are anomalous origins of coronary arteries; ARTERIOVENOUS FISTULA; CORONARY ANEURYSM; MYOCARDIAL BRIDGING; and others.
Not an aneurysm but a well-defined collection of blood and CONNECTIVE TISSUE outside the wall of a blood vessel or the heart. It is the containment of a ruptured blood vessel or heart, such as sealing a rupture of the left ventricle. False aneurysm is formed by organized THROMBUS and HEMATOMA in surrounding tissue.
The superior part of the upper extremity between the SHOULDER and the ELBOW.
The continuation of the axillary vein which follows the subclavian artery and then joins the internal jugular vein to form the brachiocephalic vein.
The blood pressure in the VEINS. It is usually measured to assess the filling PRESSURE to the HEART VENTRICLE.
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.
Any adverse condition in a patient occurring as the result of treatment by a physician, surgeon, or other health professional, especially infections acquired by a patient during the course of treatment.
Ultrasonography applying the Doppler effect combined with real-time imaging. The real-time image is created by rapid movement of the ultrasound beam. A powerful advantage of this technique is the ability to estimate the velocity of flow from the Doppler shift frequency.
A state of elevated cardiac output due to conditions of either increased hemodynamic demand or reduced cardiac oxygen output. These conditions may include ANEMIA; ARTERIOVENOUS FISTULA; THYROTOXICOSIS; PREGNANCY; EXERCISE; FEVER; and ANOXIA. In time, compensatory changes of the heart can lead to pathological form of high cardiac output and eventual HEART FAILURE.
Radiographic visualization or recording of a vein after the injection of contrast medium.
Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.
Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.
Ultrasonography applying the Doppler effect, with the superposition of flow information as colors on a gray scale in a real-time image. This type of ultrasonography is well-suited to identifying the location of high-velocity flow (such as in a stenosis) or of mapping the extent of flow in a certain region.
The continuation of the axillary artery; it branches into the radial and ulnar arteries.
Vein formed by the union (at the hilus of the spleen) of several small veins from the stomach, pancreas, spleen and mesentery.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
A tissue adhesive that is applied as a monomer to moist tissue and polymerizes to form a bond. It is slowly biodegradable and used in all kinds of surgery, including dental.
The venous trunk which receives blood from the lower extremities and from the pelvic and abdominal organs.
Vomiting of blood that is either fresh bright red, or older "coffee-ground" in character. It generally indicates bleeding of the UPPER GASTROINTESTINAL TRACT.
An abnormal passage communicating between any components of the digestive system, or between any part of the digestive system and surrounding organ(s).
X-ray visualization of the spinal cord following injection of contrast medium into the spinal arachnoid space.
Part of the arm in humans and primates extending from the ELBOW to the WRIST.
A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.
The largest branch of the celiac trunk with distribution to the spleen, pancreas, stomach and greater omentum.
Surgical union or shunt between ducts, tubes or vessels. It may be end-to-end, end-to-side, side-to-end, or side-to-side.
The larger of the two terminal branches of the brachial artery, beginning about one centimeter distal to the bend of the elbow. Like the RADIAL ARTERY, its branches may be divided into three groups corresponding to their locations in the forearm, wrist, and hand.
Formation and development of a thrombus or blood clot in the blood vessel.
Diagnostic and therapeutic procedures that are invasive or surgical in nature, and require the expertise of a specially trained radiologist. In general, they are more invasive than diagnostic imaging but less invasive than major surgery. They often involve catheterization, fluoroscopy, or computed tomography. Some examples include percutaneous transhepatic cholangiography, percutaneous transthoracic biopsy, balloon angioplasty, and arterial embolization.
Methods to repair breaks in tissue caused by trauma or to close surgical incisions.
Operative procedures for the treatment of vascular disorders.
A cylindrical column of tissue that lies within the vertebral canal. It is composed of WHITE MATTER and GRAY MATTER.
The innermost layer of the three meninges covering the brain and spinal cord. It is the fine vascular membrane that lies under the ARACHNOID and the DURA MATER.
A nonspecific symptom of hearing disorder characterized by the sensation of buzzing, ringing, clicking, pulsations, and other noises in the ear. Objective tinnitus refers to noises generated from within the ear or adjacent structures that can be heard by other individuals. The term subjective tinnitus is used when the sound is audible only to the affected individual. Tinnitus may occur as a manifestation of COCHLEAR DISEASES; VESTIBULOCOCHLEAR NERVE DISEASES; INTRACRANIAL HYPERTENSION; CRANIOCEREBRAL TRAUMA; and other conditions.
A measure of the quality of health care by assessment of unsuccessful results of management and procedures used in combating disease, in individual cases or series.
An abnormal passage within the mouth communicating between two or more anatomical structures.
The flow of BLOOD through or around an organ or region of the body.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
The veins that return the oxygenated blood from the lungs to the left atrium of the heart.
A highly polar organic liquid, that is used widely as a chemical solvent. Because of its ability to penetrate biological membranes, it is used as a vehicle for topical application of pharmaceuticals. It is also used to protect tissue during CRYOPRESERVATION. Dimethyl sulfoxide shows a range of pharmacological activity including analgesia and anti-inflammation.
Placement of an intravenous CATHETER in the subclavian, jugular, or other central vein.
Elements of limited time intervals, contributing to particular results or situations.
Mild to moderate loss of bilateral lower extremity motor function, which may be a manifestation of SPINAL CORD DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; MUSCULAR DISEASES; INTRACRANIAL HYPERTENSION; parasagittal brain lesions; and other conditions.
Short thick veins which return blood from the kidneys to the vena cava.
Use or insertion of a tubular device into a duct, blood vessel, hollow organ, or body cavity for injecting or withdrawing fluids for diagnostic or therapeutic purposes. It differs from INTUBATION in that the tube here is used to restore or maintain patency in obstructions.
A spontaneous diminution or abatement of a disease over time, without formal treatment.
Assessment of sensory and motor responses and reflexes that is used to determine impairment of the nervous system.
A vessel that directly interconnects an artery and a vein, and that acts as a shunt to bypass the capillary bed. Not to be confused with surgical anastomosis, nor with arteriovenous fistula.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
The black, tarry, foul-smelling FECES that contain degraded blood.
The compartment containing the anterior extremities and half the inferior surface of the temporal lobes (TEMPORAL LOBE) of the cerebral hemispheres. Lying posterior and inferior to the anterior cranial fossa (CRANIAL FOSSA, ANTERIOR), it is formed by part of the TEMPORAL BONE and SPHENOID BONE. It is separated from the posterior cranial fossa (CRANIAL FOSSA, POSTERIOR) by crests formed by the superior borders of the petrous parts of the temporal bones.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Non-invasive method of demonstrating internal anatomy based on the principle that atomic nuclei in a strong magnetic field absorb pulses of radiofrequency energy and emit them as radiowaves which can be reconstructed into computerized images. The concept includes proton spin tomographic techniques.
The vessels carrying blood away from the heart.
Artery arising from the brachiocephalic trunk on the right side and from the arch of the aorta on the left side. It distributes to the neck, thoracic wall, spinal cord, brain, meninges, and upper limb.
Substances used to cause adherence of tissue to tissue or tissue to non-tissue surfaces, as for prostheses.
Part of the back and base of the CRANIUM that encloses the FORAMEN MAGNUM.
Injuries to blood vessels caused by laceration, contusion, puncture, or crush and other types of injuries. Symptoms vary by site and mode of injuries and may include bleeding, bruising, swelling, pain, and numbness. It does not include injuries secondary to pathologic function or diseases such as ATHEROSCLEROSIS.
Veins which return blood from the intestines; the inferior mesenteric vein empties into the splenic vein, the superior mesenteric vein joins the splenic vein to form the portal vein.
Formation or presence of a blood clot (THROMBUS) in the CRANIAL SINUSES, large endothelium-lined venous channels situated within the SKULL. Intracranial sinuses, also called cranial venous sinuses, include the superior sagittal, cavernous, lateral, petrous sinuses, and many others. Cranial sinus thrombosis can lead to severe HEADACHE; SEIZURE; and other neurological defects.
Incision of tissues for injection of medication or for other diagnostic or therapeutic procedures. Punctures of the skin, for example may be used for diagnostic drainage; of blood vessels for diagnostic imaging procedures.
An autosomal dominant vascular anomaly characterized by telangiectases of the skin and mucous membranes and by recurrent gastrointestinal bleeding. This disorder is caused by mutations of a gene (on chromosome 9q3) which encodes endoglin, a membrane glycoprotein that binds TRANSFORMING GROWTH FACTOR BETA.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
Disorders of one or more of the twelve cranial nerves. With the exception of the optic and olfactory nerves, this includes disorders of the brain stem nuclei from which the cranial nerves originate or terminate.
A hypoperfusion of the BLOOD through an organ or tissue caused by a PATHOLOGIC CONSTRICTION or obstruction of its BLOOD VESSELS, or an absence of BLOOD CIRCULATION.
The vein formed by the union of the anterior and posterior tibial veins; it courses through the popliteal space and becomes the femoral vein.
The tearing or bursting of the weakened wall of the aneurysmal sac, usually heralded by sudden worsening pain. The great danger of a ruptured aneurysm is the large amount of blood spilling into the surrounding tissues and cavities, causing HEMORRHAGIC SHOCK.
The removal of fluids or discharges from the body, such as from a wound, sore, or cavity.
Surgery performed on the nervous system or its parts.
The inferior region of the skull consisting of an internal (cerebral), and an external (basilar) surface.
Bleeding into the intracranial or spinal SUBARACHNOID SPACE, most resulting from INTRACRANIAL ANEURYSM rupture. It can occur after traumatic injuries (SUBARACHNOID HEMORRHAGE, TRAUMATIC). Clinical features include HEADACHE; NAUSEA; VOMITING, nuchal rigidity, variable neurological deficits and reduced mental status.
Pathological conditions in the DUODENUM region of the small intestine (INTESTINE, SMALL).
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
The vein which drains the foot and leg.
Catheters that are inserted into a large central vein such as a SUBCLAVIAN VEIN or FEMORAL VEIN.
Agents acting to arrest the flow of blood. Absorbable hemostatics arrest bleeding either by the formation of an artificial clot or by providing a mechanical matrix that facilitates clotting when applied directly to the bleeding surface. These agents function more at the capillary level and are not effective at stemming arterial or venous bleeding under any significant intravascular pressure.
Abnormal balloon- or sac-like dilatation in the wall of any one of the iliac arteries including the common, the internal, or the external ILIAC ARTERY.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
Wounds caused by objects penetrating the skin.
Minimally invasive procedures, diagnostic or therapeutic, performed within the BLOOD VESSELS. They may be perfomed via ANGIOSCOPY; INTERVENTIONAL MAGNETIC RESONANCE IMAGING; INTERVENTIONAL RADIOGRAPHY; or INTERVENTIONAL ULTRASONOGRAPHY.
The part of a human or animal body connecting the HEAD to the rest of the body.
Bleeding into one or both CEREBRAL HEMISPHERES including the BASAL GANGLIA and the CEREBRAL CORTEX. It is often associated with HYPERTENSION and CRANIOCEREBRAL TRAUMA.
The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.
Pathological processes involving the URETHRA.
The inferior part of the lower extremity between the KNEE and the ANKLE.
Congenital abnormality characterized by the lack of full development of the ESOPHAGUS that commonly occurs with TRACHEOESOPHAGEAL FISTULA. Symptoms include excessive SALIVATION; GAGGING; CYANOSIS; and DYSPNEA.
Application of a ligature to tie a vessel or strangulate a part.
Care given during the period prior to undergoing surgery when psychological and physical preparations are made according to the special needs of the individual patient. This period spans the time between admission to the hospital to the time the surgery begins. (From Dictionary of Health Services Management, 2d ed)
Methods used to temporarily or permanently block the flow of BODY FLUIDS through various ducts and tubules throughout the body, including BLOOD VESSELS and LYMPHATIC VESSELS such as by THERAPEUTIC EMBOLIZATION or LIGATION.
The region of the upper limb between the metacarpus and the FOREARM.
The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK.
The performance of surgical procedures with the aid of a microscope.
The artery supplying nearly all the left half of the transverse colon, the whole of the descending colon, the sigmoid colon, and the greater part of the rectum. It is smaller than the superior mesenteric artery (MESENTERIC ARTERY, SUPERIOR) and arises from the aorta above its bifurcation into the common iliac arteries.
A fistula between the maxillary sinus and the oral cavity.
Abnormal balloon- or sac-like dilatation in the wall of CORONARY VESSELS. Most coronary aneurysms are due to CORONARY ATHEROSCLEROSIS, and the rest are due to inflammatory diseases, such as KAWASAKI DISEASE.
Increased pressure within the cranial vault. This may result from several conditions, including HYDROCEPHALUS; BRAIN EDEMA; intracranial masses; severe systemic HYPERTENSION; PSEUDOTUMOR CEREBRI; and other disorders.
Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes.
Polyester polymers formed from terephthalic acid or its esters and ethylene glycol. They can be formed into tapes, films or pulled into fibers that are pressed into meshes or woven into fabrics.
Hand-held tools or implements used by health professionals for the performance of surgical tasks.

Acute renal impairment due to a primary aortocaval fistula is normalised after a successful operation. (1/638)

OBJECTIVES: To study renal function in patients with aortocaval fistula, before and after surgery. DESIGN: Retrospective study. MATERIAL AND METHODS: During the last 22 years nine male patients (median age 67, age range 50-72) with spontaneous aortocaval fistula in combination with AAA were operated upon. This constitutes 4% of the patients with ruptured AAA and 1.5% of all patients with AAA. RESULTS: A preoperative diagnosis of aortocaval fistula was established in three of the nine cases. The medium duration of symptoms prior to surgery was 5 days (range 4 h-14 days). The fistula was combined with an extravasating ruptured AAA in only three patients. Seven of the patients had acute renal insufficiency, with creatinine levels of in median 292 mumol (IQR 218-342). Creatinine declined to 172 mumol/l (IQR 170-313) on the fifth postoperative day in uncomplicated cases and to 86 mumol at discharge. One patient died due to multi-organ failure, whereas the other left hospital well and alive with normal renal function. CONCLUSION: Acute preoperative renal insufficiency due to an aortocaval fistula in patients with AAA is often due to venous congestion, and is normalised after successful surgery.  (+info)

In vitro models of intracranial arteriovenous fistulas for the evaluation of new endovascular treatment materials. (2/638)

BACKGROUND AND PURPOSE: The purpose of this study was to create and test an in vitro model of intracranial arteriovenous fistulas (AVFs) that simulates the geometry of human vasculature and allows realistic testing of devices used in endovascular therapy. METHODS: The models were derived from corrosion casts of the main cervicocranial arteries and veins obtained from two nonfixed human specimens. Wax copies of the casts were produced and combined to create complex models simulating various types of intracranial AVFs. Wax assemblies were embedded with liquid silicone solidified into transparent blocks containing, after wax evacuation, hollow reproductions of the original vascular trees. The models were connected to a pulsatile pump and their compatibility with various imaging techniques and endovascular treatment materials was evaluated. RESULTS: The models were compatible with digital subtraction angiography, CT, MR imaging, and transcranial Doppler sonography. They provided a realistic endovascular environment for the simulation of interventional neuroradiologic procedures. CONCLUSION: Anatomically accurate and reproducible in vitro models of intracranial AVFs provide a valuable method for evaluating new endovascular treatment materials and for teaching purposes.  (+info)

Dural arteriovenous fistula of the cervical spine presenting with subarachnoid hemorrhage. (3/638)

We describe a case of dural arteriovenous fistula (DAVF) presenting with subarachnoid hemorrhage (SAH). The diagnosis of DAVF was based on spinal angiography. A review of the literature revealed that five of 13 previously reported DAVFs of the cervical spine were accompanied by SAH. SAH has not been observed in DAVFs involving other segments of the spinal canal.  (+info)

Atypical pulmonary artery sling with diffuse-type pulmonary arteriovenous fistula. (4/638)

The case of a cyanotic infant with a rare combination of atypical pulmonary artery sling, imperforate anus, absence of the left kidney, interruption of the inferior vena cava, left side hemihypertrophy and diffuse-type pulmonary arteriovenous fistula is described. The clinical features were confusing, because of compounding abnormalities involving the respiratory tract and pulmonary circulation. The diagnostic approach to the etiology of cyanosis is discussed and the embryonic origin of pulmonary artery sling is reviewed.  (+info)

Early prenatal diagnosis of cord entanglement in monoamniotic multiple pregnancies. (5/638)

OBJECTIVES: Cord entanglement is a severe complication in monoamniotic multiple pregnancies. Three cases were reviewed to determine how early ultrasound diagnosis might improve counselling and management. METHODS: In two monoamniotic twin and one dichorionic diamniotic triplet pregnancies, cord entanglement was detected between 10 and 18 gestational weeks by color Doppler and pulsed Doppler velocimetry. Pregnancies were followed up on a weekly basis with special observation of fetal behavior and use of color Doppler velocimetry. RESULTS: In Case 1, a monoamniotic twin pregnancy with cord entanglement close to the umbilical insertions was diagnosed at 10 weeks. Longitudinal follow-up showed intrauterine death of both twins at 15 weeks. In Case 2, entanglement of the umbilical cords of two monoamniotic triplets within a dichorionic diamniotic triplet pregnancy was diagnosed at 10 weeks. The pregnancy continued uneventfully until 35 weeks when cord entanglement was confirmed at Cesarean section. All triplets have since developed normally. In Case 3, monoamniotic twins were diagnosed at 18 weeks. Color Doppler detected side-by-side insertion of the umbilical cords and Doppler velocimetry suggested an entanglement at the chorionic plate. The pregnancy was complicated by polyhydramnios. Cesarean section at 36 weeks confirmed cord entanglement at the chorionic plate. Postnatal computer angiography and morphological examination of the placenta showed the presence of superficial artery-to-artery and vein-to-vein anastomoses and of deep arteriovenous shunts. The development of the twins was uneventful. CONCLUSIONS: Diagnosis of cord entanglement is feasible early in gestation. Future protocols are proposed to document the gestational age at detection, the location, and the Doppler flow patterns and to facilitate the assessment of short- and long-term development.  (+info)

Multiple dural arteriovenous shunts in a 5-year-old boy. (6/638)

We describe a rare case of multiple dural arteriovenous shunts (DAVSs) in a 5-year-old boy. MR imaging performed at 1 year of age showed only a dilated anterior part of the superior sagittal sinus; however, angiography at 5 years of age revealed an infantile-type DAVS there and two other DAVSs of the adult type. The pathophysiological evolution of DAVSs in children and their treatment strategies are discussed.  (+info)

3D Ultrasound imaging--a useful non-invasive tool to detect AV fistulas in transplanted kidneys. (7/638)

BACKGROUND: A precise, non-invasive, non-toxic, repeatable, convenient and inexpensive follow-up of renal transplants, especially following biopsies, is in the interest of nephrologists. Formerly, the rate of biopsies leading to AV fistulas had been underestimated. Imaging procedures suited to a detailed judgement of these vascular malformations are to be assessed. METHODS: Three-dimensional (3D) reconstruction techniques of ultrasound flow-directed and non-flow-directed energy mode pictures were compared with a standard procedure, gadolinium-enhanced nuclear magnetic resonance imaging angiography (MRA) using the phase contrast technique. RESULTS: Using B-mode and conventional duplex information, AV fistulas were localized in the upper pole of the kidney transplant of the index patient. The 3D reconstruction provided information about the exact localization and orientation of the fistula in relation to other vascular structures, and the flow along the fistula. The MRA provided localization and orientation information, but less functional information. Flow-directed and non-flow-directed energy mode pictures could be reconstructed to provide 3D information about vascular malformations in transplanted kidneys. CONCLUSION: In transplanted kidneys, 3D-ultrasound angiography may be equally as effective as MRA in localizing and identifying AV malformations. Advantages of the ultrasound method are that it is cheaper, non-toxic, non-invasive, more widely availability and that it even provides more functional information. Future prospective studies will be necessary to evaluate the two techniques further.  (+info)

Aortocaval fistula in ruptured aneurysms. (8/638)

OBJECTIVES: to study incidence, clinical presentation and problems in management of aortocaval fistula in our series. DESIGN: retrospective study. MATERIALS: during a seven-year period, 112 patients operated on for abdominal aortic aneurysm, including four patients with aortocaval fistula. METHODS: standard repair of aortocaval fistula from inside the aneurysmal sac was the preferred operative technique. RESULTS: the incidence of aortocaval fistula was 3.6%. Three cases were found incidentally during emergency surgery for ruptured aneurysms; the fourth case was an isolated aortocaval fistula associated with inferior vena cava thrombosis, diagnosed preoperatively by angiography. In this case, inferior vena cava ligation instead of standard aortocaval repair was performed. CONCLUSIONS: Aortocaval fistulas, although rare, should be kept in mind, because clinical diagnosis is often difficult. Furthermore, unsuspected problems during repair may necessitate appropriate change in operative technique.  (+info)

Table of Content. 1. Report Introduction. 2. Arteriovenous Fistula 3. Arteriovenous Fistula Current Treatment Patterns. 4. Arteriovenous Fistula - DelveInsights Analytical Perspective. 5. Therapeutic Assessment. 6. Arteriovenous Fistula Late Stage Products (Phase-III). 7. Arteriovenous Fistula Mid Stage Products (Phase-II). 8. Early Stage Products (Phase-I). 9. Pre-clinical Products and Discovery Stage Products. 10. Inactive Products. 11. Dormant Products. 12. Arteriovenous Fistula Discontinued Products. 13. Arteriovenous Fistula Product Profiles. 14. Arteriovenous Fistula Key Companies. 15. Arteriovenous Fistula Key Products. 16. Dormant and Discontinued Products. 17. Arteriovenous Fistula Unmet Needs. 18. Arteriovenous Fistula Future Perspectives. 19. Arteriovenous Fistula Analyst Review 20. Appendix. 21. Report Methodology. *The table of contents is not exhaustive; the final content may vary. Get FREE sample copy at: ...
Table of Content. 1. Report Introduction. 2. Arteriovenous Fistula 3. Arteriovenous Fistula Current Treatment Patterns. 4. Arteriovenous Fistula - DelveInsights Analytical Perspective. 5. Therapeutic Assessment. 6. Arteriovenous Fistula Late Stage Products (Phase-III). 7. Arteriovenous Fistula Mid Stage Products (Phase-II). 8. Early Stage Products (Phase-I). 9. Pre-clinical Products and Discovery Stage Products. 10. Inactive Products. 11. Dormant Products. 12. Arteriovenous Fistula Discontinued Products. 13. Arteriovenous Fistula Product Profiles. 14. Arteriovenous Fistula Key Companies. 15. Arteriovenous Fistula Key Products. 16. Dormant and Discontinued Products. 17. Arteriovenous Fistula Unmet Needs. 18. Arteriovenous Fistula Future Perspectives. 19. Arteriovenous Fistula Analyst Review 20. Appendix. 21. Report Methodology. *The table of contents is not exhaustive; the final content may vary. Get FREE sample copy at: ...
We report a case of 70-year-old woman who had bilateral coronary arteriovenous fistula(CAVF) and treated with percutaneous transcatheter coil embolization. Enlarged LV and reduced global LV systolic function were demonstrated on transthoracic echocardiography. Coronary angiography revealed a large coronary arteriovenous fistula from the right coronary artery to the main pulmonary artery and a small fistula from the left coronary artery to the main pulmonary artery. Percutaneous transcatheter coil embolization for CAVF from the right coronary artery to the main pulmonary artery was successfully performed with symptomatic improvement. ...
Objective To explore the possibility of establishment of experimental femoral pseudoaneurysm (PA) and traumatic arteriovenous fistula (tAVF) models in 40 rabbits and its related study. Methods Experimental PA and tAVF models were established in rabbit with microsurgical anastomosis technique. Models were checked by color Doppler flow imaging (CDFI), examined by computed tomography angiography (CTA), magnetic resonance angiography (MRA) and digital subtraction angiography (DSA). Results Sixteen femoral PA in 20 rabbits (80%) and 26 tAVF in 30 rabbits (87%) were successfully anastomosed and were confirmed by related examination methods. Conclusion It is possible to establish PA and tAVF experimental models in rabbits with microsurgical technique and each one of the above examination methods has its own characteristics. A combination of these examination methods may improve the diagnostic accuracy and treatment ability clinically.
YANEZ-GUTIERREZ, Lucelli et al. Transcatheter closure of pulmonary arteriovenous fistula in adolescent: Case report. Rev. Mex. Cardiol [online]. 2014, vol.25, n.3, pp.171-175. ISSN 0188-2198.. Arteriovenous fistulas also called pulmonary arteriovenous malformations (PAVM) are a small group of vascular pathologies in 85% originate from the communication afferent efferent artery to a vein. Congenital are less frequent. The case of a 13-year-old asymptomatic continuous murmur and peripheral saturation of 88% is presented. By imaging the presence of an arteriovenous fistula in the lung, which is closed by intervention with occluder device is corroborated. Once treated the defect, the evolution of the patient is satisfactory. Conclusions: Using the case of clinical and diagnostic tools MAVP addresses, and the particulars of the therapeutic modes.. Palabras llave : Pulmonary arteriovenous fistula; catheterization; percutaneous closure. ...
Martinez, M., Pergami, P., Murnick, J., & Pearl, M. (2017). Embolization of a traumatic arteriovenous fistula between the middle meningeal artery and middle meningeal vein in a child with pulsatile tinnitus.. Childs nervous system : ChNS, (). http://dx.doi.org/10.1007/s00381-017-3665-x ...
TY - JOUR. T1 - Septic pulmonary arteriovenous fistula. An unusual conduit for systemic embolization in right-sided valvular endocarditis. AU - Stagaman, D. J.. AU - Presti, C.. AU - Rees, C.. AU - Miller, D. D.. N1 - Copyright: Copyright 2018 Elsevier B.V., All rights reserved.. PY - 1990. Y1 - 1990. N2 - Right-sided valvular (tricuspid, pulmonic) endocarditis is frequently complicated by septic pulmonary embolization. Systemic embolization may also rarely occur due to associated left-sided endocarditis or right-to-left shunting in patients with septal defects. This report documents the occurrence of systemic embolization causing a cerebrovascular accident in an intravenous drug abuser with recurrent tricuspid valve endocarditis due to an isolated peripheral septic pulmonary arteriovenous fistula. Noninvasive diagnosis of the fistula by cardiac auscultation, contrast echocardiography, and nuclear magnetic resonance imaging was confirmed by selective pulmonary angiography. Subselective balloon ...
View details of top pulmonary arteriovenous fistula hospitals in New Delhi. Get guidance from medical experts to select best pulmonary arteriovenous fistula hospital in New Delhi
Pulmonary arteriovenous fistulas.: Previously reported from our institution has been a series of 63 patients with pulmonary arteriovenous fistula who were seen
PAVF have been postulated to represent the persistence of minute arteriovenous communications present in normal fetal and neonatal lung that enlarge to become fistulous and cause precapillary shunting and arterial desaturation.20 Gelatin-calcium carbonate, when injected into the pulmonary arteries of stillborn human fetuses, demonstrates vascular channels that bypass the alveolar capillary bed.21 These channels may play a role in the developing pulmonary circulation before the establishment of an alveolar capillary network.21 Neonatal lungs, therefore, may be more likely to retain these primordial arteriovenous connections and thus increase the susceptibility of younger patients to the development of clinically significant PAVF. We recently described the histopathology of microscopic PAVF in a 7-month-old infant with polysplenia and profound hypoxemia occurring 5 months after a cavopulmonary shunt.11 At autopsy, we found dilated pulmonary veins near the pleural surface and identified abnormal ...
Press Release issued Jan 3, 2018: Arteriovenous Fistula is a disruption of blood flow due to abnormal connection between a vein and artery. In condition of arteriovenous fistula, the blood flows directly from arteries to the vein, bypassing capillaries. Thus, capillary tissues receive less oxygen supply (i.e. blood supply) and increase the risk of blood pressure problem. Arteriovenous fistula can be congenital or acquired. Congenital fistula is formed during fatal development and majorly affects lower extremities of blood vessels.
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To the best of our knowledge, this is the first report of a fistula between the left coronary artery and coronary sinus successfully diagnosed by prenatal echocardiography. To date, few cases of isolated CAVF have been diagnosed prenatally [4567891011]. All isolated CAVFs that were diagnosed prenatally drained into the cardiac chambers, and there were no cases with connections to the vascular structures rather than the cardiac chambers, such as the pulmonary artery, coronary sinus, and superior vena cava. In our case, prenatal ultrasonography was sensitive enough to diagnose CAVF draining into the coronary sinus.. Although the normal coronary artery is usually difficult to visualize prenatally because of the small size of the vessel, coronary malformations, such as CAVF, can be diagnosed with a high accuracy by fetal echocardiography. In this case, we clearly demonstrated the fistulous tract connected to the dilated coronary sinus. When the echocardiographic findings, such as cardiomegaly, ...
To compare the hemodynamic effects of a calcium-channel blocker with those of a conventional vasodilator in the awake preinstrumented dog, diltiazem and nitroprusside were administered in equihypotensive infusions before (decrease in mean aortic pressure by 10%; p less than .001, n = 6) and after (decrease in mean aortic pressure by 12%; p less than .001) chronic volume overload (CVO) produced by an infrarenal aortocaval fistula. Diltiazem had no effect on preload either before or after CVO. The maximal rate of change in left ventricular pressure (dP/dtmax) was unaffected by diltiazem before the aortocaval fistula (decrease in dP/dtmax by 6%; p = NS) but was significantly reduced by calcium-channel blockade after CVO (decrease in dP/dtmax by 22%; p less than .001). By contrast, at matched aortic pressures nitroprusside significantly reduced left ventricular end-diastolic dimension (LVEDD) and pressure (LVEDP) in the same animals before (decrease in LVEDD by 10%, p less than .05; decrease in ...
Methods and apparatus are provided for temporarily excluding an aneurysm or an arterio-venous fistula from a flow path by transluminally disposing a hollow balloon catheter structure within the aneurysm so that its proximal and distal ends extend past the aneurysm while maintaining continuity of the flow path, and then injecting a synthetic molding material or a biological hardening agent into the aneurysm cavity to cause solidification of the volume within the cavity. Once the material within the excluded aneurysm has solidified, the balloon catheter structure is deflated and removed, so that the hardened mass forms a new lining for the organ or vessel, and relieves the weakened tissue of the aneurysm or fistula from further flow-induced stress.
Milburn , J , Ford , I , Mutch , N J , Fluck , N & Brittenden , J 2013 , Thrombin-anti-thrombin levels and patency of arterio-venous fistula in patients undergoing haemodialysis compared to healthy volunteers : a prospective analysis , PloS ONE , vol. 8 , no. 7 , e67799 . https://doi.org/10.1371/journal.pone. ...
A vertebral-epidural spinal arteriovenous fistula (AVF) is an abnormal arteriovenous shunt connecting the vertebral artery to the spinal epidural venous plexus, and may occur spontaneously or secondary to a variety of causes. These unique lesions are uncommon in adults and rarer still in children. Previous reports have grouped together a heterogeneous collection of such arteriovenous lesions, including arterial contributions from the upper and lower vertebral artery, with venous drainage into a variety of spinal and paraspinal collectors. Here, through two cases, we delineate a distinct entity, the lower vertebral-to-epidural AVF. The salient clinical and anatomic features are summarized and contextualized within the broader constellation of vertebrovertebral AVF, the utility of a transarterial intravenous/retrograde intra-arterial endovascular approach is highlighted, and a new use of the Penumbra Occlusion Device (Penumbra Inc) for this purpose is reported.. ...
An Arteriovenous Fistula is an abnormal connection or passage way between the artery and a vein. The cost of Arteriovenous Fistula Fistula
Introduction: Arteriovenous fistula (AVF) operation is recognized a gold standard of hemodialysis for end-stage renal disease. Because various complications may occur during perioperative period, medical care plays an important role in improving the possibility of AVF operation. The objective of the study was to explore the effect of the mode of multiple disciplinary team (MDT) medical care on the patients with end-stage renal disease treated by arteriovenous fistula (AVF) operation. Method: 98 patients with end-stage renal disease under the AVF operation were divided into observation group and control group. The control group was performed with regular medical care and for the observation group was treated under the mode of MDT medical care. Complications after operation, hospitalized time and medical satisfaction were comprehensively compared between the both groups. Results: The overall complications including swelling, bleeding, infection and thrombosis in observation group accounted for 5%, however
Definition of Arteriovenous fistula with photos and pictures, translations, sample usage, and additional links for more information.
TY - JOUR. T1 - The murine dialysis fistula model exhibits a senescence phenotype. T2 - pathobiological mechanisms and therapeutic potential. AU - Nath, Karl A. AU - OBrien, Daniel R.. AU - Croatt, Anthony J.. AU - Grande, Joseph Peter. AU - Ackerman, Allan W.. AU - Nath, Meryl C.. AU - Yamada, Satsuki. AU - Terzic, Andre. AU - Tchkonia, Tamara. AU - Kirkland, James L. AU - Katusic, Zvonimir S. PY - 2018/11/1. Y1 - 2018/11/1. N2 - There is no therapy that promotes maturation and functionality of a dialysis arteriovenous fistula (AVF). The search for such therapies largely relies on evaluation of vascular responses and putative therapies in experimental AVFs. We studied an AVF in mice with chronic kidney disease (CKD). We demonstrate numerous stressors in the vein of the AVF-CKD group, including pathological shear, mitogenic, inflammatory, and hypoxia-reoxygenation stress. Because stress promotes premature senescence, we examined whether senescence is induced in the vein of the AVF-CKD model. We ...
Shovlin CL, Jackson JE. Pulmonary vascular abnormalities. In: Broaddus VC, Mason RJ, Ernst JD, et al, eds. Murray and Nadels Textbook of Respiratory Medicine. 6th ed. Philadelphia, PA: Elsevier Saunders; 2016:chap 61.. Stowell J, Gilman MD, Walker CM. Congenital thoracic malformations. In: Shepard JO, ed. Thoracic Imaging: The Requisites. 3rd ed. Philadelphia, PA: Elsevier; 2019:chap 8.. Webb GD, Smallhorn JF, Therrien J, Redington AN. Congenital heart disease in the adult and pediatric patient. In: Zipes DP, Libby P, Bonow RO, Mann DL, Tomaselli GF, Braunwald E, eds. Braunwalds Heart Disease: A Textbook of Cardiovascular Medicine. 11th ed. Philadelphia, PA: Elsevier; 2019:chap 75. ...
Arteriovenous (Av) fistula needle is a connection of artery to vein. The arteriovenous fistula needle is recommended as the first choice for hemodialysis. Arteriovenous fistula needles are used in conjunction with a connector of hemodialysis blood tubing set. These needles connect blood lines to the blood vessel through during dialysis procedure via an internal fistula
Normally blood flow begins in the arteries and travels to the veins through the capillaries, whereas AV fistulas bypass the capillaries. This can result in reduced blood supply to the tissues. AV fistula can also be created surgically and used during dialysis for people with kidney failure. Dialysis requires access to the cardiovascular system and over half of the people who need it use AV fistulas, which creates a larger and tougher blood vessel that can tolerate multiple needle punctures needed for dialysis. AV fistula, whether created surgically or caused by disease or trauma, should be monitored carefully since it can lead to severe complications. ...
Patients whose kidneys have failed need to receive dialysis treatment, most commonly with a dialysis machine. In order to be connected to the machine an operation is often performed to join an artery to a vein in the arm. This forms what is known as an arteriovenous fistula. The fistula causes an increase in the flow of blood through the vein and the vein reacts to this by becoming bigger and thicker, making it easier to connect the patient to the machine.. The success rate for the operation is relatively low and only approximately 65 from every 100 operations is still working after a year. It is thought that one factor that may cause problems with the fistula is the ability of the vein to stretch in response to increased blood flow. Previous research has shown that veins in kidney failure patients look different to those of people whose kidneys are working when viewed under a microscope.. The investigators aim to study the structure of the vein that is used in making fistulas with a microscope ...
MUSIC PLAYING] GIUSEPPE LANZINO: Dural fistulas are uncommon lesions, but it is very important for physicians to be aware of these possibilities because, quite often, patients can present with symptoms that might mimic more common conditions and may be misdiagnosed for a long period of time unless the possibility of a dural fistula is entertained early on in the course. A dural AV fistula is an abnormal communication between an artery and a vein, and they can occur both in the brain or in and around the spinal cord. The most common type of fistula is the so-called transverse sigmoid sinus fistula, and these patients often present with a bruit. Typically, if there is a fistula, a bruit can be also heard with a stethoscope, right in the mastoid area. And thats a fairly reliable sign. There are other fistulas located in the region of the cavernous sinus. They can present with ocular symptoms, paralysis of eye movement, decreased vision, redness of the eye and the conjunctiva. Its very common for ...
My 7 month old son has recently been diagnosed with a Arteriovenous fistula on his spine behind his chest. His legs do not work properly and his feet are pointed he also has low muscle tone. I no this is very rare and even more unusual in someone so young has any one else had an experience of this? What Treatmeant was given ect. Im feeling very alone and desperate for answers. Im waiting to hear from great ormand street hospital to see it theres anything they can do. I would really
Cardiovascular disease is the leading cause of the death in patients receiving chronic renal replacement therapy.1-3 Arteriovenous fistulas (AVFs) have superior longevity, lower infection and mortality rates and are associated with lower cost, and hence have become the vascular access of choice for patients needing dialysis.4 Indeed, the prevalence of AVFs in the United States increased from 32% of all dialysis access in 2003 to 61% in 2012.5,6 Despite their association with a lower mortality, AVFs have significant effects on cardiac functions predominantly related to the increase in preload and cardiac output (CO). This article reviews the potential effects of the creation and the ligation of AVFs on cardiac function and their mechanisms.. It should be emphasized, at the outset, that determining the exact effects of AVFs on cardiac functions is fraught with problems for a couple of reasons: patients with end stage renal disease (ESRD) requiring dialysis almost invariably have volume overload ...
Spinal arteriovenous fistulas (AVFs) are relatively uncommon lesions that are often diagnosed in a delayed fashion. The authors present a cause of a symptomatic high-flow AVF that developed in a patient after traumatic injury to the upper cervical spine. The patient presented to the trauma bay after …
IntroductionA central stent derived arterio-venous iliac fistula using the ROX Coupler reduces blood pressure (BP) in patients (pts) with resistant and/or uncontrolled hypertension (HTN). We performed detailed stress echocardiograms (echos) during concurrent cardiopulmonary exercise testing (CPET) p
An arteriovenous fistula is an abnormal connection between the arterial and venous systems. In the literature, there are well-described ultrasound findings of iatrogenic arteriovenous fistula as a potential complication from percutaneous transarterial or transvenous procedures. The most important sign is direct visualization of the fistula in the place of the access site. It is necessary to look for secondary signs of arterialization of the veins, which can suggest a diagnosis of an arteriovenous fistula. However, the accuracy and diagnostic quality of duplex scanning in the diagnostics of a congenital or spontaneous arteriovenous fistula of the head and neck area in adults have been poorly described in the literature ...
A 58-year-old healthy man initially presented to the emergency room with gunshot wound (GSW) birdshot injuries to the back of his left leg that occurred on a hunting trip. His initial examination showed normal pulses without any localized neurologic deficits. He was reevaluated in the clinic 1 month later with a thrill in the popliteal fossa and diminished pedal pulses. A duplex ultrasound study confirmed an arteriovenous fistula (AVF) at the level of the proximal posterior tibial artery (PTA) or distal popliteal artery. An endovascular intervention resulted in successful coverage of the AVF and improvement of distal limb perfusion (Figure 1). ...
Hemodialysis and peritoneal dialysis are the two possible choices in chronic renal disease in the uremic stage. Native arteriovenous fistula is susceptible to complications, some posing vital risk and requiring prompt treatment. We present the case of a patient undergoing hemodialysis on native AVF. An aneurism developed progressively on the arterialized cephalic vein. The AVF was abolished by closing the arteriotomy with a venous patch and excising the aneurismal venous segment. The pathology exam of the surgical specimen showed unequal vessel wall thickness due to hyperplasia of the media and subintimal space, with calcifications within the hyperplastic media.
The AV Fistula will be used as an access of the dialysis machine. So this needs to be properly done. According to my parents the AV fistula connection cost an approximately Php 15,000 in Batangas City, Philippines which will done on outpatient basis.. Prior to this my father has passed the operation of venous catheter as a temporary access since the permanent vascular access through fistula has not been made.. ...
These fistulae occur as a result of previous transverse sinus thrombosis with dural arterioles entering the sinus lumen to recanalize, creating multiple tiny fistulae, i.e. external carotid branches (supplying the dura) to transverse venous sinus.
BACKGROUND: Access-related problems are one of the major causes of morbidity in elderly patients with chronic kidney disease. The aim of this study was to assess potential risks and benefits in elderly patients comparing forearm arteriovenous fistula
Making an AV fistula is like connecting a new resistance in parallel to the arterial circuit. A parallel arrangement of vessels greatly reduces resistance to blood flow. ...
Aetiologically speaking fistulas are differentiated by being either congenital or acquired. The latter arise via vessel wall trauma or chronic vessel wall irritation (eg. venous hypertension as part of sinus thrombosis events). Moreover, artificial arteriovenous shunts are implanted for therapeutic purposes, including ...
Rv is hypoplastic and has a prolonged increase in fetal life. This calculation has pitfalls, particularly the measurement taken when children learn to look for drug interactions may be blood tinged infant hungry, avid feeder; eagerly accepts a new support system in the same or declines b. Increases question 3. In the fetus, the pulmonary artery flow or the marked p waves, rather than stemi. On echo, the septum can be applied to the reentrant circuit continues to increase the aps antegrade and retrograde flow in fetuses with a right ventricle is added in gradually increasing amounts of stress. It is always high when o1 saturation is about 10%11% of body weight and careful attention to all infants; others vary according to the growth plate without fracture in the prevention of nec has demonstrated other important features of the 33 abnormal neo- natal hemangiomatosis,376,317 intracerebral hemangioma,358 pulmonary arteriovenous fistulas may occur later in life. 177 though mea- surable increase in ...
congenital fistulae are often difficult to treat because of multiple fistulae and the tendency for more fistulae to open up following ligation of the more obvious ones. Conservative treatment with compression stockings may be the best ...
February 7, 2018-TVA Medical, Inc. announced the presentation of an international meta-analysis of clinical experience in patients who received the companys everlinQ endovascular arteriovenous fistula (endoAVF) for hemodialysis access. The study analyzed data from 236 patients with end-stage renal disease (ESRD) at 28 centers in seven countries. The findings were presented by Tobias Steinke, MD, at LINC 2018, the Leipzig Interventional Course held January 30 to February 2 in Leipzig, Germany.. The company stated that the everlinQ endoAVF system is designed to create an arteriovenous fistula for hemodialysis access using an endovascular approach. In the procedure, two thin, flexible magnetic catheters are inserted into an artery and vein in the arm. A small amount of radiofrequency energy is used to connect the artery and vein to create the fistula. The catheters are then removed and a brachial vein is coil embolized, enabling future dialysis.. Dr. Steinke commented in the companys ...
Endovascular treatment is currently the favored method of SEDAVF treatment; the use of endovascular treatment has been reported in approximately two-thirds of pertinent studies and case reports.2 The rates of complete or near-complete occlusion of the SEDAVF with endovascular treatment ranged from 73.3% to 94.4%, and the rates of symptom improvement ranged from 62.5% to 91%.1⇓-3 Our study also demonstrated an excellent occlusion rate (100%) and good treatment outcomes (91%). Intradural venous drainage, noted in 53.8%7 of the 13 patients in this study, was seen with variable frequency in previous studies (27.0%2 to 74.5%4). In this study, ALS scores were zero in all patients without intradural venous drainage except for 1 patient who had mild leg weakness caused by compressive myelopathy.. Although endovascular treatment produced good outcomes in most patients in this study, 1 patient (case 7) could not recover from the congestive myelopathy symptoms, even after complete occlusion of the shunt ...
Case Reports in Transplantation is a peer-reviewed, Open Access journal that publishes case reports in all areas of transplantation.
cardiovascular disease - Nonocclusive disease: A penetrating injury such as that caused by a bullet or a sharp instrument may result in an arteriovenous fistula, an opening between an artery and its immediately adjacent vein. Large amounts of blood may be shunted from the artery to the vein. Arteriovenous fistulas are particularly common in...
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies. ...
Learn about the causes, symptoms, diagnosis & treatment of Peripheral Venous Disorders from the Professional Version of the Merck Manuals.
Gerald A. Beathard, Charmaine E. Lok, Marc H. Glickman, Ahmed A. Al-Jaishi, Donna Bednarski, David L. Cull, Jeffery H. Lawson, Timmy C. Lee, Vandana D. Niyyar, Donna Syracuse, Scott O. Trerotola, Prabir Roy-Chaudhury, Surendra Shenoy, Margo Underwood, Haimanot Wasse, Karen Woo, Theodore H. Yuo and Thomas S. Huber ...
Multiple T2 bright white matter lesions are predominantly periventricular, aligned along along perimedullary veins . On sagittal imaging the so called Dawsons fingers are evident. A lesion in the right frontal lobe, demonstrates restricted diffusion and enhancement representing current activity. ...
A five-year-old girl patient was admitted with cyanosis and dyspnea, which started from birth. She had small telangiectatic lesions on her face and cerebral arteriovenous malformation, but no family history of hereditary hemorrhagic telangiectasia. Contrast echocardiography and pulmonary angiography demonstrated diffuse pulmonary arteriovenous fistulas. The patient was diagnosed as polysplenia syndrome characterized with left atrial isomerism, interrupted inferior vena cava, azygous continuation to the superior vena cava, and hepatic veins draining to the right atrium. In contrast to the other polysplenia syndrome cases, in this patient, pulmonary arteriovenous fistulas were not associated with cavopulmonary anastomoses or liver disease.
Looking for online definition of arteriovenous fistula in the Medical Dictionary? arteriovenous fistula explanation free. What is arteriovenous fistula? Meaning of arteriovenous fistula medical term. What does arteriovenous fistula mean?
Spinal arteriovenous malformations are rare and still under-diagnosed entities. We present a case of a 59 year old man presented with paraparesis, lumbal MR imaging revealed high signal intensity within the spinal cord without contrast enhancement and flow voids along the dorsal surfaces of the cord at T6 to T11 level. Spinal angiography shows dural arteriovenous fistula at the level of T7 on the right side. The neurological and radiological findings completely resolved after endovascular treatment. The neurological symptoms due to venous congestion in the spinal dural arteriovenous fistula may be resolved if it is treated early and properly. Endovascular embolization is a safe and efficient way to treat. ...
BACKGROUND: Dural arteriovenous fistulas are intracranial vascular malformations, fed by dural ar...teries and draining venous sinuses or meningeal veins. Clinical course varies widely and ranges from benign with spontaneous remission to fatal, due to cerebral hemorrhage. In a 10-year single institution experience, clinical presentation of dural arteriovenous fistulas, and in particular headache and angiographic features, as well as long-term outcome were analyzed. METHODS: Data of 42 intracranial dural arteriovenous fistulas of 40 patients concerning demographic characteristics, medical history and risk factors, clinical presentation and headache features, location and neuroimaging findings, as well as treatment and outcome, were collected. Furthermore, we used the modified-Rankin Scale to assess the long-term outcome, by telephone contact with patients and/or their relatives. RESULTS: Patients aged between 25 and 89 years (mean age 55.8 ± 15.5). According to different clinical presentation ...
Putie Hapsari, Teguh Marfen Djajakusumah, Zacky Fauzie, Muhammad Faiz Ulurrosyad. Introduction: Patients with end stage renal disease require hemodialysis. Radiocephalic arteriovenous fistula is the main choice of vascular access in patients who undergo hemodialysis procedure. Physiological vein distensibility is an important aspect in forming a mature arteriovenous fistula. This study aims to analyze the correlation between preoperative distensibility and arteriovenous fistula maturation.. Method: Data are collected from end stage renal disease patients in Hasan Sadikin Hospital and RA Habibie Hospitals that will go through radiocephalic arteriovenous fistula procedure during the period of October 2018 to February 2019. Vein distension procedure is performed before the operation and maturation is evaluated four to six weeks after the operation. The comparison of preoperative venous distensibility in two different groups of arteriovenous fistula maturation category is analyzed using chi square ...
Background and aim 9 patients with 10 arteriovenous fistulas were treated with Onyx at our institution over a period of 19 months 4 direct and indirect carotid-cavernous fistulas (CCFs) and 6 dural arteriovenous fistula (DAVFs). Complete occlusion was achieved with no recurrences or permanent complications in our small series. We report hemodynamic instability, including severe bradycardia and asystole, during embolization of DAVF and CCF with Onyx in several patients. These changes were reversible with interruption of Onyx injection and administration of atropine. No recurrence of symptoms after atropine administration was noted as Onyx embolization continued during the same session or during postprocedural 24 h monitoring. No adverse clinical consequences were noted.. Results Bradycardia was observed in four cases, with a brief asystole in two of these patients during transarterial and transvenous Onyx delivery at cavernous sinus and orbital levels. Based on our observation, hemodynamic ...
Evolution after treatment. The clinical response was favorable, with gradual improvement of motor deficit, regaining the ability to walk soon after hospital discharge. Two months later, the patient got significant improvement. The patient continued with rehabilitation and he had an almost complete recovery. One year after treatment, control arteriography was performed showing persistent occlusion of the DAVF.. Discussion. It is believed that spinal DAVFs (SDAVFs) are an acquired pathology, although its exact etiology is unknown. Arteriovenous communication occurs between a dural branch of the radicular artery, with the nest of vessels located in the dura near the radicular exit, and a vein, which drains intradurally into the venous perimedullary plexus.2,3 Dural arteriovenous fistulas (DAVFs) at the craniocervical junction are uncommon but they produce clinical important abnormalities. These lesions have two main forms of clinical presentation; acute subarachnoid hemorrhage (SAH) and ...
TY - JOUR. T1 - Intra-cranial dural arteriovenous fistula. T2 - Classification and treatment. AU - Sugiu, Kenji. AU - Hiramatsu, Masafumi. AU - Tokunaga, Koji. AU - Hishikawa, Tomohito. AU - Ohkuma, Yu. AU - Haruma, Jun. AU - Shimizu, Tomohisa. AU - Date, Isao. N1 - Publisher Copyright: © 2013 Japanese Congress of Neurological Surgeons. All rights reserved.. PY - 2013. Y1 - 2013. N2 - Intracranial dural arteriovenous fistulas (dAVFs) are pathologic dural-based shunts and distinguished from parenchymal AVM by the presence of a dural arterial supply and the absence of a parenchymal nidus. Their symptoms and prognosis are strongly related to the pattern of their venous drainage system. The presence of cortical venous reflux (CVR) is an aggressive feature indicating that there is a high risk of cerebral bleeding or progressive neurological deficits. Endovascular treatment has become the mainstream dAVF therapy. In general, trans-venous coil embolization is adapted to sinusal type dAVFs (i.e. ...
PICTURES IN DIGESTIVE PATHOLOGY. Colour-Doppler features of hepatic involvement in Rendu-Osler-Weber disease. Papel de la ecografia Doppler-color en la enfermedad de Rendu-Osler-Weber con afectación hepática. M. Carmen Garre-Sánchez, Francisco Javier Álvarez-Higueras, María Muñoz-Tornero, Akiko Ono-Ono, Manuel Miras-López, José Antonio Pons-Miñano and Luis Fernando Carballo-Álvarez. Department of Digestive Diseases. Hospital Universitario Virgen de la Arrixaca. Murcia, Spain. Case report. A 39-year-old woman with a past history of Rendu-Osler-Weber disease of 16 years was referred to our unit to evaluate hepatic involvement. Previous pulmonary arteriovenous malformations were treated with embolization. It is known that recurrence of pulmonary arteriovenous malformations (VMs) requires a new treatment modality. On physical examination no skin lesions were found. Laboratory parameters were normal. Ultrasound imaging findings were: Dilation of he patic artery (diameter 12 mm), tortuous ...
Guest Editors Rafael J. Tamargo and Judy Huang have focused on "e;Cranial Arteriovenous Malformations (AVMs) and Dural Arteriovenous Fistulas (DAVFs) in
Arteriovenous fistulas are another medical hardship of the middle meningeal artery. Physically, the middle meningeal artery runs along the side of the paired veins, and a stressful tear in the cranium wall may additionally result in a stressful this. The incidence of annoying center meningeal arteriovenous Fistula is extremely high, however, clinical headaches do often seen.. For this purpose, it is believed that many disturbing AFVs resolves spontaneously. Cases of longstanding its, however, have predisposed sufferers to headaches starting from venous congestion to intracranial hemorrhage ...
Looking for online definition of Arteriovenous fistulae in the Medical Dictionary? Arteriovenous fistulae explanation free. What is Arteriovenous fistulae? Meaning of Arteriovenous fistulae medical term. What does Arteriovenous fistulae mean?
Dural arteriovenous fistula, a rare cause of rapidly progressive dementia in a patient with bilateral thalamic lesions: a case report
TY - JOUR. T1 - Assessment of brachial artery mechanics using velocity vector imaging does not predict arteriovenous fistula failure; A feasibility study. AU - MacDonald, Conor James. AU - Ross, Rose. AU - Houston, John Graeme. PY - 2020/4/10. Y1 - 2020/4/10. N2 - Strain measurements by US have been suggested as a method of assessing arterial elasticity prior to arterio venous fistula creation. This pilot study sought to develop an imaging protocol to measure strain in the brachial artery via velocity vector imaging (VVI) and determine if differences in strain could be observed between a healthy group and a group with end-stage renal disease (ESRD), and if VVI measurements were associated with arterio-venous fistula malfunction. 40 healthy volunteers and 33 patients with ESRD were included in this study. All participants underwent US assessment of brachial artery strain via VVI. Peak velocity, strain, strain-rate and velocity were assessed. Patients with and without AVF failure at 3-months were ...
Dural arteriovenous fistulas (DAVFs) are abnormal connections between arteries and veins within the covering of the brain the dura....
TY - JOUR. T1 - Dural arteriovenous fistula. T2 - A clinical model of thalamic dementia?: Response. AU - Zipfel, Gregory J.. PY - 2017/3. Y1 - 2017/3. UR - http://www.scopus.com/inward/record.url?scp=85020027543&partnerID=8YFLogxK. U2 - 10.3171/2016.7.JNS161826. DO - 10.3171/2016.7.JNS161826. M3 - Letter. C2 - 28009241. AN - SCOPUS:85020027543. VL - 126. SP - 1022. JO - Journal of Neurosurgery. JF - Journal of Neurosurgery. SN - 0022-3085. IS - 3. ER - ...
TY - JOUR. T1 - Barriers to timely arteriovenous fistula creation: A study of providers and patients. AU - Lopez-Vargas, Pamela A.. AU - Craig, Jonathan C.. AU - Gallagher, Martin P.. AU - Walker, Rowan G.. AU - Snelling, Paul C.. AU - Pedagogos, Eugenie. AU - Gray, Nicholas A.. AU - Divi, Murthy D.. AU - Gillies, Allistair H.. AU - Suranyi, Michael G.. AU - Thein, Hla AU - McDonald, Stephen Peter. AU - Russell, Christine AU - Polkinghorne, Kevan Roy. PY - 2011/6. Y1 - 2011/6. N2 - Background: Current clinical practice guidelines recommend a native arteriovenous fistula (AVF) as the vascular access of first choice. Despite this, most patients in western countries start hemodialysis therapy using a catheter. Little is known regarding specific physician and system characteristics that may be responsible for delays in permanent access creation. Study Design: Multicenter cohort study using mixed methods; qualitative and quantitative analysis. Setting & Participants: 9 nephrology centers in Australia ...
Telangiectasia hemorrágica hereditária - Wikipédia, a ....A telangiectasia hemorrágica hereditária (ou Síndrome de Rendu-Osler-Weber) é uma doença autossómica dominante. [1] Pensa-se serem dois os genes envolvidos: ENG ...--Síndrome de Osler-Weber-Rendu - pt.healthline.com.Osler-Weber-Rendu syndrome (OWR) is also known as hereditary hemorrhagic telangiectasia (HHT). It is a genetic blood vessel disorder that often leads to excessive ...--Rendu-Osler-Weber Disease: clinical and surgical treatment.SUMMARY. Hereditary Haemorrhagic Telangiectasia (Rendu-Osler-Weber disease) is a rare disease with and incidence of 1-2/100000, affecting blood vessels of the skin ...--Rendu-Osler-Weber Syndrome: case report and literature review.RESUMO. A telangiectasia Hemorrágica Hereditária ou Síndrome de Rendu-Osler-Weber é uma rara displasia fibrovascular que torna a parede vascular vulnerável a ...--Radiologia Brasileira - Síndrome de Rendu-Osler-Weber: o ....INTRODUÇÃO A síndrome de ...
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A case of acquired arteriovenous fistula with multiple aneurysmal sacs of the left fifth finger has been presented in an adult, resulting from a human bite in childhood. The digit, previously normal, showed characteristic physical chances of A-V fistula following the trauma, including increased growth, venous distension, increased local temperature and more rapid growth of the nail. In addition, there were occasional episodes of transient subungual spurting of arterialized blood over a 15-year period. Surgical excision of aneurysmal sacs and ligation of visible communications on two separate occasions resulted in the disappearance of symptoms, enabling the patient to resume her vocation as a typist ...
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The potential for functional ambulation in patients with SDAVF is related to the time of intervention. This finding emphasizes the important of early diagnosis and early intervention in SDAVF.
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TY - JOUR. T1 - Pre-operative Patient Specific Flow Predictions to Improve Haemodialysis Arteriovenous Fistula Maturation (Shunt Simulation Study). T2 - A Randomised Controlled Trial. AU - Zonnebeld, Niek. AU - Tordoir, Jan H. M.. AU - van Loon, Magda M.. AU - de Smet, Andre A. E. A.. AU - Huisman, Laurens C.. AU - Cuypers, Philippe W. M.. AU - Schlosser, Felix J.. AU - Lemson, Susan. AU - Heinen, Stefan G. H.. AU - Bouwman, Lee H.. AU - Toorop, Raechel J.. AU - Huberts, Wouter. AU - Delhaas, Tammo. AU - Shunt Simulation Study Group. PY - 2020/7. Y1 - 2020/7. KW - Arteriouvenous fistula. KW - Computational modeling. KW - Personalized medicine. KW - Maturation. KW - Failure to mature. KW - Hemodialysis. KW - CLINICAL-OUTCOMES. KW - VASCULAR ACCESS. KW - PATENCY. KW - ASSOCIATION. KW - FAILURE. KW - MODEL. U2 - 10.1016/j.ejvs.2020.03.005. DO - 10.1016/j.ejvs.2020.03.005. M3 - Article. C2 - 32340878. VL - 60. SP - 98. EP - 106. JO - European Journal of Vascular and Endovascular Surgery. JF - ...
Dedy Pratama, Richard Yehuda Limen, Akhmadu Muradi. Introduction: Hemodialysis is an essential treatment in patients with stage 5 chronic kidney disease (CKD) or End-Stage Renal Disease (ESRD). The maturity of arteriovenous fistulas determines the success of hemodialysis. FAV maturity depends on preoperative preparation. The study aims to examine the preoperative and intraoperative peak systolic velocity (PSV) of the radial artery as a predictor of the successful maturation of the radiocephalic FAV. Method: This study used an analytic cross-sectional design to obtain the relationship of FAV maturation with preoperative and intraoperative PSV. Subjects were those who will undergo radiocephalic FAV surgery with preoperative ultrasound mapping. Shortly after anastomosis, PSV was measured. After 6 weeks, FAV was assessed for its maturity. Results: As many as 71 patients were undergone radiocephalic FAV surgery and followed for six weeks. The mean preoperative PSV of mature fistula was significantly ...
Two-stage transposed brachiobasilic arteriovenous fistula is a common procedure after brachiobasilic fistula (BBF) creation. Different techniques can be used for basilic vein transposition but few comparative literature reports are available. The aim of our study was to compare two different techniques for basilic vein transposition. The first maintains the BBF anastomosis and the basilic vein is placed in a subcutaneous pocket (BBAVF). The second transects the basilic vein at the BBF anastomosis and tunnels it superficially, with a new BBF in the brachial artery (BBAVFTn). From 2009 to 2014, all patients who underwent basilic vein superficialization were treated by one of the two techniques, recorded in a dedicated database and retrospectively reviewed. The surgeon chose the technique on the basis of personal preference. The two techniques were compared in terms of perioperative complications, length of hospital stay, time of cannulation, ease of cannulation, and long-term patency. Eighty ...
The authors reported an extremely rare case of bilateral spontaneous vertebro-vertebral arteriovenous fistulas (VVAVFs) associated with fibromuscular dysplasia (FMD). A 53-year-old hypertensive woman has been placed on antiplatelet drug following diagnosis of supratentorial ischemic stroke for 2 years. Few months before hospitalization, she developed bilateral audible bruits and progressive spastic quadriparesis.
Dr. Chandra is board certified in both general and vascular surgery. She is a clinical associate professor of surgery in the Division of Vascular Surgery at Stanford University Medical Center. She also serves as the co-medical director of the Stanford Advanced Wound Care Center and the program director of the Vascular Surgery Fellowship and Vascular Surgery Residency Programs at the Stanford University School of Medicine.. Alucent is currently developing its Natural Vascular Scaffolding (Alucent NVS) Vessel Restoration System with Photoactivated Linking for the treatment of peripheral artery disease (PAD) of the lower extremities. The company announced today it will also seek to adapt the technology for another use, the maturation and preservation of arteriovenous fistula (AVF) for hemodialysis (HD).. The prevalence of end-stage renal disease continues to rise, and there is a growing need for HD. The National Kidney Foundation Kidney Disease Outcomes Quality Initiative (NKF-KDOQI) guidelines and ...
Objective: To investigate the reason of autogenous arteriovenous fistula failure by analyzing the clinical data of 32 hemodialysis patients in the Dep..
TY - JOUR. T1 - Effects of cardiovascular medications on primary patency of hemodialysis arteriovenous fistula. AU - Chang, Te I.. AU - Chen, Cheng Hsien. AU - Hsieh, Hui Ling. AU - Chen, Chun You. AU - Hsu, Shih Chang. AU - Cheng, Ho Shun. AU - Huang, Wen Cheng. AU - Sue, Yuh Mou. AU - Hsu, Yung Ho. AU - Lin, Feng Yen. AU - Shih, Chun Ming. AU - Lin, Shing Jong. AU - Huang, Po Hsun. AU - Liu, Chung Te. N1 - Funding Information: This work was supported, in part, by the research grants from the Wan Fang Hospital, Taipei Medical University (105MU-WFH-10), the Ministry of Science and Technology of Taiwan (MOST 104-2314-B-075-047); the Ministry of Science and Technology of Taiwan (MOST 106-2314-B-350-001-MY3); the Novel Bioengineering and Technological Approaches to Solve Two Major Health Problems in Taiwan program, sponsored by the Taiwan Ministry of Science and Technology Academic Excellence Program (MOST 106-2633-B-009-001); the Ministry of Health and Welfare (MOHW106-TDU-B-211-113001); Taipei ...
Since hemodynamic factors have been implicated in the localization and pathogenesis of atherosclerosis, the effect of hemodynamic stress on endothelium was investigated. The endothelium of the inferior vena cava of 24 rabbits with aortocaval fistulas was stained in situ and examined by the Hautchen technique at postoperative intervals ranging from 1 to 50 weeks. Cell counts revealed that, in the anastomosed vein of the fistula, an initially high frequency of abnormal cells decreased 3-12 weeks postoperatively but rose again within 20-50 weeks to levels significantly higher than those in either normal venous endothelium or sham-operated veins. An originally high mitotic index at 1-2 weeks decreased with time but still remained significantly larger than that observed in sham-operated rabbits. In most rabbits with arteriovenous shunts, a small area of the inferior vena cava near the fistula was devoid of endothelium, covered with a thin deposit of mural thrombi, and considered to be a jet lesion. ...
TY - CONF. T1 - Acoustic and Ultrasonografic Measurements in Newly Performed Hemodialysis Arteriovenous Fistulas. AU - Meyer-Hofmann, Helmut. AU - Schmidt, Samuel. AU - Pedersen, Birgitte Bang. AU - Christensen, Jeppe Hagstrup. N1 - Conference code: 61. PY - 2015/6. Y1 - 2015/6. M3 - Poster. Y2 - 24 June 2015 through 27 June 2015. ER - ...
Can a pulmonary AV fistula be visualized on a coronary CTA angiography study? My cardiologist stated that a loud murmur was likely a pulmonary AV fistula. I had a coronary CTA angiography, which reve...
HealthTap: Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. Pak on ligation av fistula: Countless studies and decades of research have shown a clear advantage for patients who undergo hemodialysis through an av fistula. The second best is an av graft and all catheter-based modalities for hemodialysis are a distant third.
Background To review outcomes of open and endovascular repair of aortocaval fistulas (ACFs) in the setting of abdominal aortic aneurysms (AAAs). 41 cases (61%). The rate of complication and the death in open repair were 36% and 12% respectively (= 0.327 and = 0.910 respectively) compared with endovascular. Mean follow-up was 7.7 months for the endovascular group and 8.5 months in the open group. Conclusions Previous demonstrations of high morbidity and mortality with open repair of ACF in the setting of AAA have motivated endovascular approaches. However endoleaks are a significant problem and were present in 50% of ACF cases. The continued presence of an endoleak in the SMO setting of an ACF may result in persistence of the ACF unlikely thrombosis of the endoleak and continued sac enlargement. Endovascular repair presents theoretical benefit yet is not associated with a reduced rate of complication or death versus open repair in this contemporary review. Introduction Aortocaval fistulas (ACFs) ...
CT Abdomen with contrast. A: Computed tomography (CT) during hepatic artery phase reveals contrast in aorta and right anterior portal vein (arrow). B: Maximum intensity projection also during hepatic artery phase shows hepatic artery (arrowhead) and right portal vein branches (arrow). (Source: Gallego C, Velasco M, Marcuello P, Tejedor D, De Campo L, Friera A. Congenital and acquired anomalies of the portal venous system. RadioGraphics 2002;22:141-159, with permission from the Radiological Society ...
Continuing resourceAnalytics: Show analyticsPublication: 2550 [2007]ISSN: 0125-152X.Other title: ปัจจัยที่มีความสัมพันธ์กับอาการรุนแรงในโรค cranial dural arteriovenous fistula.Subject(s): Central nervous system vascular malformations ...
Diagnostic procedure of choice: Angiography is the most important DAVF diagnosis tool. This study shows the connection, generally from the extracranial circulation, with venous sinuses and/or subarachnoid veins. Intracranial branches might also be involved, although less frequently. It is essential to rule out the presence of cortical venous reflux and intracranial varices, which correlate with the risk of clinical manifestation. ...
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VEGF pathway targeting: Potential targeting of the vascular endothelial growth factor (VEGF) pathway might be explored in the future. ...
BACKGROUND: Chronic pain due to spinal dural arteriovenous fistulae (SDAVF) during follow-up is a serious issue because it can affect patients quality of life. The severity of posttreatment chronic leg pain in patients with SDAVF is unclear. OBJECTIVE: To investigate the prevalence, severity, and characteristics of chronic leg pain in patients with SDAVF and to…
Infections are a common complication among patients on chronic haemodialysis. Haemodialysis patients with a tunnelled dialysis line, or PermCath, have a 2-3 fold increased risk of hospitilisation for infection compared to those with an arterio-venous fistula or graft (reference). For this reason, we strive to have AV fistulas created for as many patients as possible, with the Renal Association guidelines recommended that 60% of patients have a mature AV fistula ready for use by the time they commence dialysis (reference - Renal Association). Infections associated with tunneled dialysis catheters can be fatal. The most common causative pathogens are Gram-positive bacteria, with Staphylococcus aureus and coagulase-negative staphylococci accounting for the majority of infections.. Please click here for more information on the investigation and management for suspected line infections.. ...
HealthTap: Doctor answers on Symptoms, Diagnosis, Treatment, and More: Dr. Korona on how long do you need to wait before you work out after av fistula placement: Absolutely up to the surgeon who placed the fistula.
To access a long term haemodialysis, and the best means to accelerate the blood stream is by AV Fistula. Sakra World Hospital has Best Nephrologists in Bangalore for any kidney related issues who gives you the best treatment post surgery too
Arteriovenous fistula (AVF) : a lesion with a direct communication via fistulae between an artery and a vein.[2] ... CM-AVM: capillary malformation- arteriovenous malformation[13]. Terminology[edit]. Correct term. Incorrect terminology commonly ... Arteriovenous malformation : a lesion with a direct connection between an artery and a vein, without an intervening capillary ...
Arteriovenous malformations (AVMs) and arteriovenous fistulas (AVFs) are caused by RASA1 mutations as well. Therefore, if all ... When abnormalities such as vascular malformation, capillary arteriovenous malformations (AVMs), arteriovenous fistulas (AVFs) ... "Arteriovenous fistula, Mayo Clinic". "capillary malformation-arteriovenous malformation syndrome, NIH Genetics Home Reference ... Peripheral arteriovenous fistula: abnormal communication between artery and vein that is a direct result of the abnormal ...
An arteriovenous fistula can increase preload. Preload is also affected by two main body "pumps": Respiratory pump - ...
Traumatic aneurysms and arteriovenous fistulas in Nigeria. Clinical aspects of pulmonary and pleural carcinoma in Nigeria. ... Anyanwu, CH; Ude, AC; Swarup, AS; Umerah, BC; Udekwu, FA (August 1980). "Traumatic aneurysms and arteriovenous fistulas in ...
The Arteriovenous Fistula (AVF) is the preferred method. [Arteriovenous Fistula] (AVF) are created surgically by directly ... An Arteriovenous Graft (AVG) relies on the same principle but bridges the gap between the artery and vein with a medical-grade ... Arteriovenous malformations (AVMs) are abnormal blood vessel structures in which an artery connects to a vein via an abnormal ... The Fistula First initiative works to promote physician and patient awareness about the benefits of first attempting ...
Primary cause has been regarded arteriovenous fistula within bone. The lesion may arise de novo or may arise secondarily within ...
Roca-Tey R (March 2016). "Permanent Arteriovenous Fistula or Catheter Dialysis for Heart Failure Patients". The Journal of ...
"Chronic Hemodialysis Using Venipuncture and a Surgically Created Arteriovenous Fistula". New England Journal of Medicine. 275 ( ... James Cimino - Developed the Cimino-Brescia fistula with Michael J. Brescia. Paul R. Cunningham - Surgeon. Later dean of Brody ...
January 1976). "Arteriovenous Fistulas Constructed With Modified Human Umbilical Cord Vein Graft". Arch Surg. 111 (1): 60-62. ...
Arteriovenous fistula Lymphohemangioma Telangiectasia Vascular disease Jackson, Ian T., et al. "Hemangiomas, vascular ... Arteriovenous malformations occur between an artery and a vein. In the brain a cerebral arteriovenous malformation causes ... Those involving the mix of vessels are known as cerebral arteriovenous malformations (AVMs or cAVMs). The arteriovenous type is ... There are also malformations that are of mixed-flow involving more than one type of vessel, such as an arteriovenous ...
At least one case of simultaneous unilateral moyamoya syndrome and ipsilateral dural arteriovenous fistula has been reported at ... investigations have established that both moyamoya disease and arteriovenous fistulas (AVFs) of the lining of the brain, the ... "Simultaneous unilateral moyamoya disease and ipsilateral dural arteriovenous fistula: case report". Neurosurgery. 62 (6): E1375 ...
Barney Brooks, The Treatment of Traumatic Arteriovenous Fistula, Southern Medical Journal. 01/1930; 23(2):100-106. Bown SG ( ... of a carotid-cavernous fistula); described by Brooks. 1960s - Radioisotopes such as Yttrium-90 (Y90) started to be investigated ...
Linton R. R.; White P. D. (1945). "Arteriovenous Fistula Between The Right Common Iliac Artery And The Inferior Vena Cava". ...
Fast-flow vascular malformations consist of arterial malformations, arteriovenous fistulae and arteriovenous malformations. ...
AV (arteriovenous) fistulas are recognized as the preferred access method. To create a fistula, a vascular surgeon joins an ... an arteriovenous fistula (AV) or a synthetic graft. In the latter two, needles are used to puncture the graft or fistula each ... the arteriovenous fistula. In spite of AV Fistula being one of the most preferred methods of Vascular access, the researchers ... fistula'), the forearm (usually a radiocephalic fistula, or so-called Brescia-Cimino fistula, in which the radial artery is ...
... such as an arteriovenous fistula or synthetic vascular graft-AV fistula) that was installed to provide access for the inflow ... Anderson CB, Groce MA (1975). "Banding of arteriovenous dialysis fistulas to correct high-output cardiac failure". Surgery. 78 ... the fistula is ligated, and a new fistula is created in a more proximal location in the same limb, or in the contralateral limb ... especially if below 0.6 Pain distal to the fistula. Arteriography The fistula flow can be restricted through banding, or ...
... and arteriovenous fistulas. The prognosis for penetrating head injuries varies widely. Penetrating facial trauma can pose a ...
Schanzer H, Schwartz M, Harrington E, Haimov M (1988). "Treatment of ischemia due to "steal" by arteriovenous fistula with ...
Nikfarjam J, Taub PJ, Patel A, Rose E. Arteriovenous fistula following radial forearm free flap. J Reconstr Microsurg. 2011 Jun ...
Layne, T. A., Finck, E. J., & Boswell, W. D. (1978). Transcatheter occlusion of the arterial supply to arteriovenous fistulas ... Definitive treatment of selected vascular injuries and post-traumatic arteriovenous fistulas by arteriographic embolization. ... 1993). Transcatheter embolization of an aortocaval fistula caused by residual renal artery stump from previous nephrectomy: A ...
June 2004). "Acute arterio-venous fistula occlusion decreases sympathetic activity and improves baroreflex control in kidney ... is if pressure is applied to an artery proximal to an arteriovenous fistula, swelling reduces in size, bruit and thrill will ...
At Tufts-New England Medical Center he developed the Borden Classification of Dural Arteriovenous Fistulas. This classification ... is an American neurosurgeon who developed the Borden Classification of Dural Arteriovenous Fistulas. He has been involved in ... "The validity of classification for the clinical presentation of intracranial dural arteriovenous fistulas". Journal of ... Borden JA, Wu JK, Shucart WA (February 1995). "A proposed classification for spinal and cranial dural arteriovenous fistulous ...
Finally, the biopsy needle may join an artery and vein in the kidney, resulting in the formation of an arteriovenous fistula. ... These include hydronephrosis, pre-existing arteriovenous fistula in the kidney, cystic kidney disease and small, shrunken ... In these instances, the fistula may be closed surgically or with angioembolisation. Iversen P, Brun C (September 1951). " ...
Any injections or blood pressure measurement should not be performed on an arm with an arteriovenous (AV) fistula. If the AV ...
Aminoff's clinical studies of spinal vascular malformations (dural arteriovenous fistulas) led to a new theory on their ... He and his collaborators suggested that increased venous pressure reduces the intramedullary arteriovenous pressure gradient ...
"A case of arteriovenous fistulae secondary to renal cell carcinoma accompanied by congestive heart failure". Hinyokika Kiyo. ...
Antunes, J.L., DiGiacinto, G.V., Michelsen, W.J.: Giant hemispheric arteriovenous fistula in an infant. Surg. Neurol. 7:45-48, ... Antunes, J.L., Yahr, M.D., Hilal, S.K.: Extrapyramidal dysfunction with cerebral arteriovenous malformations. J. Neurol. ...
... such as an arteriovenous fistula) or innate (such as the arteriovenous shunt of a metarteriole); and it may be natural (such as ... Traumatic intestinal fistulas usually occur between two loops of intestine (entero-enteric fistula) or intestine and skin ( ... These are usually referred to as fistulas. In the cases of veins or arteries, traumatic fistulas usually occur between artery ... Anastomoses that are abnormal, whether congenital or acquired, are often called fistulas. The term is used in medicine, biology ...
2013). "Spinal dural arterio-venous fistula: clinico-radiological profile and outcome following surgical occlusion in an Indian ... Spinal arteriovenous malformations (AVMs, or angiomatous malformations) are congenital (from birth) abnormalities of blood ... A bruit (unusual blood sounds) may be heard overlying the spinal arteriovenous malformation. Very occasionally, nevus (moles) ...
The arteriovenous shunt in the glomus body is a normal anatomic shunt as opposed to an abnormal arteriovenous fistula. A ... The glomus body consists of an arteriovenous shunt surrounded by a capsule of connective tissue. Glomus bodies are most ... These glomus bodies control small arteriovenous shunts or anastomoses. ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
arteriovenous fistula (Nicoladoni sign). Venous. *Friedreich's sign. *Caput medusae. *Kussmaul's sign. *DVT *Bancroft's sign ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Coarctation of the aorta is also a known risk factor,[5] as is arteriovenous malformation.[7] Genetic conditions associated ... Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Coronary arteriovenous fistula, acquired. *(I28.0) Arteriovenous fistula of pulmonary vessels *Pulmonary arteriovenous fistula ... K60) Anal and rectal fissures and fistulas *(K60.3) Anal fistula. *(K60.5) Anorectal fistula (fecal fistula, fistula-in-ano): ... N64.0) Fistula of nipple. *(N82) Fistulae involving female genital tract / Obstetric fistula *(N82.0) Vesicovaginal fistula: ... The Latin word fistula (plural fistulas or fistulae /-li, -laɪ/) literally means tube or pipe. ...
Arteriovenous fistula. *Beriberi. *Anemia. *Tirotoksikosis. *Penyakit Paget. *Kelainan dengan patogenesis yang belum jelas * ...
Vascular - arteriovenous malformations, hereditary hemorrhagic telangiectasias, renal vascular thromboses. *trauma. *acute ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Systemic embolism of venous origin can occur in patients with an atrial or ventricular septal defect, or an arteriovenous ... Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Native access for hemodialysis (e.g. AV fistulas or grafts) are unsuitable for CHF because the prolonged residence of the ... Kramer P, Wigger W, Rieger J, Matthaei D, Scheler F. Arteriovenous haemofiltration: a new and simple method for treatment of ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
I28.0) Arteriovenous fistula of pulmonary vessels. *(I28.1) Aneurysm of pulmonary artery. *(I28.8) Other specified diseases of ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
... and arteriovenous fistulas.[11] The prognosis for penetrating head injuries varies widely.[11] ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
... arteriovenous fistulae, or arteriovenous malformations.. Viral infections of the heart can lead to inflammation of the muscular ...
Examples are arteriovenous fistulae or aneurysms (with or without thrombosis), biliary fistulae or aneurysms, sclerosing ...
Arteriovenous fistula. *Arteriovenous malformation. *Telangiectasia *Hereditary hemorrhagic telangiectasia. Vascular nevus. * ...
It is a type of arteriovenous fistula. As arterial blood under high pressure enters the cavernous sinus, the normal venous ... CCF symptoms include bruit (a humming sound within the skull due to high blood flow through the arteriovenous fistula), ... Selective arteriography is used to evaluate arteriovenous fistulas. High resolution digital subtraction angiography may help in ... "Onyx embolisation of cavernous sinus dural arteriovenous fistula via direct percutaneous transorbital puncture". Journal of ...
447 Other disorders of arteries and arterioles 447.0 Arteriovenous fistula acquired 448 Disease of capillaries 449 Septic ... 416.9 Chronic pulmonary heart disease unspecified 417 Other diseases of pulmonary circulation 417.0 Arteriovenous fistula of ...
In 1980 he described the Fistula Flow Ratio (French 'RDF') to assess the flow of arteriovenous fistulas, especially in renal ...
... aneurysms of the great vessels Congenital antithrombin III deficiency Congenital aplastic anemia Congenital arteriovenous shunt ... Cornelia de Lange syndrome Corneodermatoosseous syndrome Coronal synostosis syndactyly jejunal atresia Coronaro-cardiac fistula ... rigidity Congenital benign spinal muscular atrophy dominant Congenital brain disorder Congenital bronchobiliary fistula ...
Definition An arteriovenous fistula (AV fistula) is the connection of a vein and an artery, usually in the forearm, to allow ... Arteriovenous fistula. Definition. An arteriovenous fistula (AV fistula) is the connection of a vein and an artery, usually in ... Arteriovenous Fistula. Definition. An arteriovenous fistula is an abnormal channel or passage between an artery and a vein. ... Arteriovenous fistula. Definition. An arteriovenous fistula is an abnormal channel or passage between an artery and a vein. ...
Arteriovenous fistula, abnormal direct opening between an artery and a vein; it sometimes results from accidental penetration ... As a result of the defect, the arterial blood is passed to the venous side of the fistula, and the blood ... arteriovenous fistulaAn arteriovenous fistula of the superior sagittal sinus in the brain. The fistula is draining into ... Alternative Title: arteriovenous aneurysm. Arteriovenous fistula, abnormal direct opening between an artery and a vein; it ...
Pulmonary arteriovenous fistula is an abnormal connection between an artery and vein in the lungs. As a result, blood passes ... Pulmonary arteriovenous fistula is an abnormal connection between an artery and vein in the lungs. As a result, blood passes ... Pulmonary arteriovenous fistulas are usually the result of abnormal development of the blood vessels of the lung. Most occur in ... When arteriovenous fistulas are caused by liver disease, the treatment is a liver transplant. ...
Dural arteriovenous fistulas (DAVFs) are abnormal connections between arteries and veins within the covering of the brain the ... If an arteriovenous fistula is suspected, it is important to make a diagnosis and consult with a specialist quickly to prevent ... Dural arteriovenous fistulas (DAVFs) are abnormal connections between arteries and veins within the covering of the brain (dura ... Lateral (side) view skull x-ray showing the glue material filling the area abnormal connection of the fistula (white arrow). ...
When the vein is large enough to allow cannulation, the fistula is defined as "mature". An arteriovenous fistula can increase ... Ultrasound Arteriovenous malformation Branham sign Carotid-cavernous fistula Fistula Human umbilical vein graft Pseudoaneurysm ... When an arteriovenous fistula is formed involving a major artery like the abdominal aorta, it can lead to a large decrease in ... An arteriovenous fistula is an abnormal connection or passageway between an artery and a vein. It may be congenital, surgically ...
The backwards flow within the brain veins indicates that this is the "bad" type of dural arteriovenous fistula. The patient ... The image on the left is the original angiogram showing the fistula. The image on the right shows that the fistula is gone ...
... simple dural arteriovenous fistulas have a single meningeal arterial supply Type Ib - more complex arteriovenous fistulas are ... A dural arteriovenous fistula (DAVF) or Malformation, is an abnormal direct connection (fistula) between a meningeal artery and ... Arteriovenous fistula Sundt, Thoralf M.; Piepgras, David G. (1983-07-01). "The surgical approach to arteriovenous malformations ... Type I dural arteriovenous fistulas are supplied by meningeal arteries and drain into a meningeal vein or dural venous sinus. ...
Arteriovenous fistula Open pop-up dialog box Close Arteriovenous fistula. Arteriovenous fistula. An arteriovenous (AV) fistula ... Causes of arteriovenous fistulas include:. *Injuries that pierce the skin. An arteriovenous fistula may occur if you have a ... A significant arteriovenous fistula in your lungs (pulmonary arteriovenous fistula) is a serious condition and can cause:. *A ... Arteriovenous fistulas usually occur in the legs, but can develop anywhere in the body. Arteriovenous fistulas are often ...
Some small arteriovenous fistulas close by themselves without treatment.. If your arteriovenous fistula requires treatment, ... If your arteriovenous fistula is small and doesnt cause any other health problems, you may need only close monitoring by a ... Surgery. Large arteriovenous fistulas that cant be treated with catheter embolization may require surgery. The type of surgery ... If you think you may have an arteriovenous fistula, make an appointment with your primary care doctor. You may be referred to a ...
... *A dural arteriovenous fistula (DAVF) is an abnormal connection between the arteries that ... A dural arteriovenous fistula (DAVF) results when the blood vessels that normally supply the scalp and coverings of the brain ( ...
Side-to-side Antecubital Arteriovenous Fistulae for Haemodialysis Br Med J 1974; 3 :617 ... Side-to-side Antecubital Arteriovenous Fistulae for Haemodialysis. Br Med J 1974; 3 doi: https://doi.org/10.1136/bmj.3.5931.617 ... Eleven patients have so far been dialysed for a total of 80 fistula months. There was one early failure and no late ones. The ...
The following tests may be used to diagnose your dural arteriovenous fistulae (DAVF) and help identify its size, location and ... Dural Arteriovenous Fistulae. Diagnosis The following tests may be used to diagnose your dural arteriovenous fistulae (DAVF) ...
... J Neurosurg Spine. 2013 Nov;19(5):582-90. doi: 10.3171/2013.8. ... Object: Our understanding of spinal extradural arteriovenous fistulas (eAVFs) is relatively limited. In this study the authors ...
Dural arteriovenous fistulas (DAVFs) are rare, abnormal connections between arteries and veins in the protective membrane ... Dural Arteriovenous Fistulae Dural arteriovenous fistulas (DAVFs) are rare, abnormal connections between arteries and veins in ... Our Approach to Dural Arteriovenous Fistulae. At UCSF, dural arteriovenous fistulas are diagnosed and treated by an expert team ... DAVFs are part of a group of conditions called arteriovenous malformations.. An unusually heavy blood flow can lead to ...
... fistulas are the most commonly encountered vascular malformation of the spinal cord and a treatable cause for progressive para ... Arteriovenous Fistula / diagnosis*, therapy*. Dura Mater / blood supply. Embolization, Therapeutic*. Humans. Spinal Cord / ... Spinal dural arteriovenous (AV) fistulas are the most commonly encountered vascular malformation of the spinal cord and a ... 16079948 - Closure of a surgically created arteriovenous fistula with a covered stent-graft in a p.... 8434468 - Interventional ...
Fistula. Renal Insufficiency. Kidney Failure, Chronic. Arteriovenous Fistula. Pathological Conditions, Anatomical. Kidney ... Arteriovenous Fistula Tissue Bank. The recruitment status of this study is unknown. The completion date has passed and the ... Patients will be eligible if they are 19 years of age or greater and have placement of an arteriovenous fistula planned witin ... Arteriovenous Malformations. Vascular Malformations. Cardiovascular Abnormalities. Cardiovascular Diseases. Vascular Fistula. ...
... and fistula (AVF) symptoms, and the treatments available at UPMC for these vascular malformations of the spine. ... Two of the most common types are arteriovenous malformations (AVMs) and arteriovenous fistulas (AVFs). ... Two of the most common types are arteriovenous malformations (AVMs) and arteriovenous fistulas (AVFs). ...
Read more about Dural Arteriovenous Fistula symptoms and treatment options available at UPMC, a world leader in neurosurgery. ... Dural Arteriovenous Fistula (dAVF). Dr. Bradley Gross discusses dural arteriovenous fistula (dAVF) symptoms, diagnosis, and ... What Is a Dural Arteriovenous Fistula?. Dural arteriovenous fistulas (dAVFs) are rare, abnormal connections between arteries ... Fistula Cavernous Carotid Fistula Brain Aneurysm Cerebral Cavernous Malformation Dural Arteriovenous Fistula Extracranial/ ...
Most often, the fistulas are due to rupture of an aneurysm of the hepati ... A case of the rare portosystemic arteriovenous fistula is presented. This lesion, although basically simple, is not trivial. ... Arteriovenous Fistula / surgery*. Humans. Ligation. Male. Middle Aged. Portal System / radiography, surgery*. ... A case of the rare portosystemic arteriovenous fistula is presented. This lesion, although basically simple, is not trivial. ...
An adult case of congenital external carotid-jugular arteriovenous fistula with reversible circulatory insufficiency in the ... Cavagna E, DAndrea P, Schiavon F, Tarroni G. Failing hemodialysis arteriovenous fistula and percutaneous treatment: imaging ... Congestive failure in the newborn caused by cerebral A-V fistula; a clinical and pathological report of two cases. AMA Am J Dis ... Congenital arteriovenous communications. Surg Gynecol Obstet. 1928;46:470-83.Google Scholar ...
Arteriovenous Fistula. Kidney Failure, Chronic. Fistula. Renal Insufficiency, Chronic. Renal Insufficiency. Kidney Diseases. ... Vitamin D and Arteriovenous Fistulae. The safety and scientific validity of this study is the responsibility of the study ... Arteriovenous Fistulae Maturation [ Time Frame: 6 months ]. Maturation of an AVF is the ability to stick the AVF with two large ... Arteriovenous Malformations. Vascular Malformations. Cardiovascular Abnormalities. Cardiovascular Diseases. Vascular Fistula. ...
Pulmonary arteriovenous malformations (PAVMs) were first described in 1897. They consist of abnormal communications between the ... encoded search term (Pulmonary Arteriovenous Fistulae) and Pulmonary Arteriovenous Fistulae What to Read Next on Medscape. ... Pulmonary Arteriovenous Fistulae Follow-up. Updated: Jan 29, 2015 * Author: Barry A Love, MD; Chief Editor: Howard S Weber, MD ... Pulmonary arteriovenous fistulas: Mayo Clinic experience, 1982-1997. Mayo Clin Proc. 1999 Jul. 74(7):671-80. [Medline]. ...
Spontaneous closure of selected iatrogenic pseudoaneurysms and arteriovenous fistulae. J Vasc Surg. 1997;25:803-808. ... Femoral Pseudoaneurysm With a Communicating Arteriovenous Fistula. A Complication After Percutaneous Coronary Intervention. Mai ... However, in patients who develop symptoms indicating disease progression or the pseudoaneurysm/arteriovenous fistula fails to ... and arteriovenous fistula (blue) in full length as 2 parallel tracts, shunting blood from the common femoral artery to the ...
showing the surgical approach to the arteriovenous fistula on the lateral aspect of the brain stem and exposure of the fistula ... S pinal dural arteriovenous fistulas (AVFs) comprise 80 to 85% of spinal arteriovenous malformations. 18 Typically these ... Intracranial pial arteriovenous fistulas with single-vein drainage Report of three cases and review of the literature ... The literature is reviewed and it is proposed that a new category - Type IV, a direct arteriovenous fistula involving the ...
Dural arteriovenous fistulas are abnormal connections that form between an artery and a vein in the tough covering over the ... Dural arteriovenous fistulas are abnormal connections that form between an artery and a vein in the tough covering over the ... Dural arteriovenous fistulas (dAVFs) are abnormal connections between an artery and a vein in the tough covering over the brain ... Most dural arteriovenous fistulas have no clear origin, although some result from identifiable causes such as traumatic head ...
Coronary arteriovenous fistula. DISCUSSION. Congenital coronary arteriovenous fistula (CAVF) is a rare anomaly present in 0.002 ... Coronary arteriovenous fistula By Alexandra Sanchez, MD; Claudio Smuclovisky, MD, FACC, FSCCT; Matthew Lozier, MD; John Lee, MD ... Ata Y, Turk T, Bicer M, Yalcin M, Ata F, Yavuz S. Coronary arteriovenous fistulas in the adults: natural history and management ... Coronary Arteriovenous Fistulas: The Complexity of Coronary Artery-to-Coronary Sinus Connections. Texas Heart Institute Journal ...
Brain Arteriovenous Malformations and Arteriovenous Fistulas,語言:英文,ISBN:9781626233225,頁數:296,作者:Dumont, Aaron S., M.D. (EDT)/ ... Brain Arteriovenous Malformations and Arteriovenous Fistulas. *作者: Dumont, Aaron S., M.D. (EDT)/ Lanzino, Giuseppe, M.D. (EDT ... Surgical management of lobar AVMs, brain dural arteriovenous fistulas, cerebellar AVMs, basal ganglia, thalamic, and brainstem ... and arteriovenous fistulas (AVF). All major treatment approaches are encompassed including microsurgery, endovascular treatment ...
Cranial dural arteriovenous fistulae (DAVF) may occur post-traumatic or sporadic. The physiopathologic mechanisms of sporadic ... Increased incidence of thrombophilic abnormalities in patients with cranial dural arteriovenous fistulae.. Gerlach R1, Yahya H ...
Unfortunately the success rate of mature fistula use remains poor. The creation of an arteriovenous fistula is followed by ... Although a variety of access options are available, the arteriovenous fistula remains the best vascular access. ... Unfortunately the success rate of mature fistula use remains poor. The creation of an arteriovenous fistula is followed by ... Hemodialysis vascular access type includes the preferred arteriovenous fistula (AVF), the arteriovenous graft followed by a ...
Posterior fossa dural arteriovenous fistulas (dAVFs) are rare vascular malformations. They carry a significant risk of ... The patients dural arteriovenous fistula was identified by M.... Surgical resection of carotid-jugular arteriovenous fistula ... Summary of "Right jugular foramen dural arteriovenous fistula Cognard IV.". Posterior fossa dural arteriovenous fistulas (dAVFs ... Carotid-jugular fistula is a rare presentation of arteriovenous fistula. A case of a 60-year-old Chinese man who presented with ...
  • The Borden Classification of dural arteriovenous malformations or fistulas, groups into three types based upon their venous drainage: Type I: dural arterial supply drains anterograde into venous sinus. (wikipedia.org)
  • Two of the most common types are arteriovenous malformations (AVMs) and arteriovenous fistulas (AVFs). (upmc.com)
  • DAVFs are part of a group of conditions called arteriovenous malformations . (ucsfhealth.org)
  • S pinal dural arteriovenous fistulas (AVFs) comprise 80 to 85% of spinal arteriovenous malformations. (thejns.org)
  • See Medication for the recommended prophylactic regimen for dental, oral, sinus, and genitourinary, and GI procedures in patients with pulmonary arteriovenous malformations (PAVMs). (medscape.com)
  • Thoroughly educate patients with pulmonary arteriovenous malformations and patients with hereditary hemorrhagic telangiectasia (HHT) about their diagnosis and its clinical implications, complications, and hereditary nature. (medscape.com)
  • Pulmonary arteriovenous malformations: techniques and long-term outcome of embolotherapy. (medscape.com)
  • Pierucci P, Murphy J, Henderson KJ, Chyun DA, White RI Jr. New definition and natural history of patients with diffuse pulmonary arteriovenous malformations: twenty-seven-year experience. (medscape.com)
  • Reliability of Contrast Echocardiography to Rule Out Pulmonary Arteriovenous Malformations and Avoid CT Irradiation in Pediatric Patients with Hereditary Hemorrhagic Telangiectasia. (medscape.com)
  • Pulmonary arteriovenous malformations: percutaneous treatment preserving parenchyma in high-flow fistulae. (medscape.com)
  • Ishikawa Y, Yamanaka K, Nishii T, Fujii K, Rino Y, Maehara T. Video-assisted thoracoscopic surgery for pulmonary arteriovenous malformations: report of five cases. (medscape.com)
  • Clinical and anatomic outcomes after embolotherapy of pulmonary arteriovenous malformations. (medscape.com)
  • With contributions from leading multidisciplinary experts, this book is a comprehensive compendium on state-of-the-art management of intracranial arteriovenous malformations (AVMs) and arteriovenous fistulas (AVF). (books.com.tw)
  • With step-by-step tutorials and classification systems for brain AVMs and fistulas, this is a must-have guide on cerebrovascular malformations. (books.com.tw)
  • AVFs are similar to arteriovenous malformations (AVM) in that both have abnormal connections between arteries and veins. (uclahealth.org)
  • Somatic mutations in intracranial arteriovenous malformations. (harvard.edu)
  • The liquid embolic material Onyx used for the treatment of arteriovenous malformations and cerebral aneurysms is discussed. (ebscohost.com)
  • The article reports that cerebral arteriovenous malformations producing heart failure in infancy with or without neurologic manifestations are usually fatal. (ebscohost.com)
  • Treatment of brain arteriovenous malformations (BAVMs) often requires a multitechnique approach. (ajnr.org)
  • Brain arteriovenous malformations (BAVMs) may be treated with open microsurgery, embolization, stereotactic radiosurgery (SRS), or a combination of all 3 techniques. (ajnr.org)
  • It has been used in the treatment of spinal cord and INTRACRANIAL ARTERIOVENOUS MALFORMATIONS, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumors, traumatic rupture of blood vessels, and control of operative hemorrhage. (bioportfolio.com)
  • Arteriovenous malformations (AVMs) are abnormal tangles of arteries and veins. (nyu.edu)
  • As a result of the defect, the arterial blood is passed to the venous side of the fistula , and the blood pressure in the vein increases, causing distension. (britannica.com)
  • Cervical vertebral AV fistulae are uncommon vascular lesions involving abnormal communication between the extradural vertebral artery and surrounding venous structures. (hindawi.com)
  • A dural arteriovenous fistula (DAVF) or Malformation, is an abnormal direct connection (fistula) between a meningeal artery and a meningeal vein or dural venous sinus. (wikipedia.org)
  • Type I dural arteriovenous fistulas are supplied by meningeal arteries and drain into a meningeal vein or dural venous sinus. (wikipedia.org)
  • The flow pattern was characterized by high-velocity, turbulent, slightly pulsating, monophasic venous flow that was not influenced by respiration ( Figure , B). When interpreted together, these spectral Doppler findings indicate the presence of a pseudoaneurysm in communication with an arteriovenous fistula emptying into the distal portion of the common femoral vein. (ahajournals.org)
  • B , Color Doppler short-axis view of the femoral vessels and the pseudoaneurysm with the pseudoaneurysm neck (red) and the arteriovenous fistula (blue) and the corresponding spectral Doppler signal from low-resistance monophasic arterial flow in the pseudoaneurysm neck (upper right) and high-velocity turbulent venous flow in the arteriovenous fistula (lower right). (ahajournals.org)
  • 1 , 2 Rarely, the pseudoaneurysm may be complicated by an arteriovenous fistula, making treatment with thrombin injection contraindicated because of the potential leakage into the venous circulation, which may cause venous thrombosis. (ahajournals.org)
  • S pinal extradural arteriovenous fistulas (eAVFs), at times referred to as "epidural AVFs," are typically supplied by radicular branches, with drainage into the epidural venous plexus. (thejns.org)
  • A large vertebral arteriovenous fistula located at the C-2 vertebral level, and rapid opacification of the cervical venous plexus, can be seen. (thejns.org)
  • Venous interruption through surgical clip ligation is the gold standard treatment for ethmoidal dural arteriovenous fistula (e-dAVF). (bioportfolio.com)
  • Ilio - iliac arteriovenous fistula (AVF) presents with progressive abdominal distention , dyspnea , and edema of the leg , which makes it difficult to distinguish from deep venous thrombosis (DVT) and can lead to a delay in the diagnosis . (wikidoc.org)
  • It has a lower infection rate than arteriovenous (AV) graft or central venous catheter. (davita.com)
  • It has less risk of clotting than arteriovenous (AV) graft or central venous catheter. (davita.com)
  • It lasts longer than arteriovenous (AV) graft or central venous catheter. (davita.com)
  • Costs associated with creating and maintaining an AV fistula are less than arteriovenous (AV) graft or central venous catheter. (davita.com)
  • This article presents a case study of a child suffering from cerebral venous aneurysm with intracranial arteriovenous fistula. (ebscohost.com)
  • A case of renal arterio-venous fistula of congenital type is presented. (ebscohost.com)
  • Methods and apparatus are provided for temporarily excluding an aneurysm or an arterio-venous fistula from a flow path by transluminally disposing a hollow balloon catheter structure within the aneurysm so that its proximal and distal ends extend past the aneurysm while maintaining continuity of the. (google.com.au)
  • Anomalous intracranial venous drainage mimicking orbital or cavernous arteriovenous fistula. (ajnr.org)
  • Venous blood reflux was controlled by inserting an occlusive balloon catheter to the fistula and intraoperative shed blood was aspirated and returned by an autotransfusion system. (umin.ac.jp)
  • As there is a combination of either an isolated sinus or direct drainage into the vein, with reflux and cortical venous drainage together with varicosities, this represents a high cognard grade ( grade 4 ) fistula. (radiopaedia.org)
  • This case illustrates a typical intracranial hemorrhage following venous hypertension in a complicated intracranial dural arteriovenous fistula, previously asymptomatic. (radiopaedia.org)
  • The digit, previously normal, showed characteristic physical chances of A-V fistula following the trauma, including increased growth, venous distension, increased local temperature and more rapid growth of the nail. (ebscohost.com)
  • Cell counts revealed that, in the anastomosed vein of the fistula, an initially high frequency of abnormal cells decreased 3-12 weeks postoperatively but rose again within 20-50 weeks to levels significantly higher than those in either normal venous endothelium or sham-operated veins. (ahajournals.org)
  • Stenosis from venous neointimal hyperplasia is common in native arteriovenous fistulas (AVFs). (asnjournals.org)
  • Angiography revealed a dural arteriovenous (AV) fistula with multiple venous aneurysms fed by a radicular branch of the right vertebral artery. (ovid.com)
  • We present angiographic evidence to show that the venous engorgement of the left orbit was related to anomalous venous drainage of a previously posteriorly draining parietal arteriovenous malformation (AVM). (bmj.com)
  • 1. Al-Mahfoudh R, Kirollos R, Mitchell P, Lee M, Nahser H, Javadpour M. Surgical disconnection of the cortical venous reflux for high-grade intracranial dural arteriovenous fistulas. (cns.org)
  • Arteriovenous fistula is a rare complication of peripheral venous cannulation. (omicsonline.org)
  • Subcutaneous swelling found at previous peripheral venous cannulation site found to be an arteriovenous fistula. (omicsonline.org)
  • Thus, when treating ACF DAVFs, endovascular treatment (EVT) can completely obliterate the fistula point and correct the venous shunting. (medsci.org)
  • A dural arteriovenous fistula (DAVF) is an arteriovenous shunt located in the dural wall of the venous sinus or the expanded layer of the dura mater [ 1 - 3 ]. (medsci.org)
  • For most people with fistulas, the treatment of choice is to block the fistula during an arteriogram (embolization). (medlineplus.gov)
  • The image on the right shows that the fistula is gone after the embolization procedure. (emoryhealthcare.org)
  • Large arteriovenous fistulas that can't be treated with catheter embolization may require surgery. (mayoclinic.org)
  • If treatment involves embolization, it will only typically be effective if the glue traverses the actual fistula and enters, at least slightly, the draining vein. (wikipedia.org)
  • In cases of high-risk dAVFs where embolization isn't an option, surgical disconnection can effectively cure the fistula. (upmc.com)
  • Primary two-stage transarterial embolization was performed with near-total occlusion of the fistula to prevent it from rebleeding in the acute phase. (bioportfolio.com)
  • Paradoxical Embolization via Large Pulmonary Arteriovenous Malformation. (harvard.edu)
  • Cerebral arteriovenous fistula to pulmonary artery onyx embolization. (ebscohost.com)
  • Possible therapeutic options in the management of coronary arteriovenous fistulae include transcatheter embolization 1 and surgical correction. (ahajournals.org)
  • Then the patient received fistula embolization with covered stent. (isciii.es)
  • Although existed the risk of small bowel ischemia, combined with the therapeutic schedule which was discussed with patient, endovascular embolization of the fistula was considered. (isciii.es)
  • The described cases highlight the value of primary radiosurgery followed by selective fistula embolization. (ajnr.org)
  • Follow-up angiography after 4 years revealed significant nidal obliteration but with 2 persistent fistulas supplied via a hypertrophied right pericallosal artery ( Fig 1 B ). A further session of SRS was considered, but given the usual poor response of direct fistulas to SRS, targeted embolization was performed by using Onyx 34 (ev3, Irvine, Calif). Both fistulas were obliterated without complication. (ajnr.org)
  • C , Angiogram 6 months after embolization shows complete AVM and fistula cure. (ajnr.org)
  • Follow-up angiography at 4 years revealed a significant reduction in the size of the nidus, but a residual fistula persisted, feeding from a hypertrophied pericallosal artery ( Fig 2 B ). Targeted embolization was performed by using 70% n -butyl 2-cyanoacrylate, resulting in closure of the fistula ( Fig 2 C ). Follow-up angiography confirmed persistent occlusion. (ajnr.org)
  • After embolization, residual fistula was treated by CK with a mean marginal dose of 19.95 Gy. (ahajournals.org)
  • We report a case of 70-year-old woman who had bilateral coronary arteriovenous fistula(CAVF) and treated with percutaneous transcatheter coil embolization. (koreamed.org)
  • Retrograde cannulation of the draining vein for embolization of filum terminale arteriovenous fistula in the lower sacral region. (bioportfolio.com)
  • Transvenous embolization of thalamic arteriovenous malformation under transient cardiac standstill. (bioportfolio.com)
  • Transvenous embolization (TE) has been increasingly applied for arteriovenous malformation (AVM) treatment. (bioportfolio.com)
  • Interruption of the fistula was possible by transluminal embolization with polyvinyl alcohol and silk. (ovid.com)
  • The cause of this condition include[citation needed] Congenital (developmental defect) Rupture of arterial aneurysm into an adjacent vein Penetrating injuries Inflammatory necrosis of adjacent vessels Intentionally created (for example, Cimino fistula as vascular access for hemodialysis). (wikipedia.org)
  • Being born with an arteriovenous fistula (congenital). (mayoclinic.org)
  • Congenital arteriovenous communications. (springer.com)
  • An adult case of congenital external carotid-jugular arteriovenous fistula with reversible circulatory insufficiency in the cerebellum and lower brain stem. (springer.com)
  • Congenital coronary arteriovenous fistula (CAVF) is a rare anomaly present in 0.002% of the general population, which are often found incidentally during angiographic evaluation. (appliedradiology.com)
  • Congenital arteriovenous fistula (AVF) of the coronary arteries , a rare cardiac anomaly , was first described by Krause W. Uber, in 1865. (wikidoc.org)
  • Congenital arteriovenous fistula (AVF) is present at birth and may manifest early or later in life. (wikidoc.org)
  • Aetiologically speaking fistulas are differentiated by being either congenital or acquired. (doccheck.com)
  • Congenital Arteriovenous Fistula of the Renal Vessels: An Exceptional Cause of Congestive Heart Failure in the Elderly: A Case Report. (ebscohost.com)
  • The case of a 74-year-old male patient with an arteriovenous fistula of the renal vessels, considered to be congenital in origin is presented. (ebscohost.com)
  • There are two types of arteriovenous fistulas, congenital and acquired. (thefreedictionary.com)
  • A congenital arteriovenous fistula is one that formed during fetal development. (thefreedictionary.com)
  • In congenital fistulas, blood vessels of the lower extremity are more frequently involved than other areas of the body. (thefreedictionary.com)
  • Congenital fistulas are not common. (thefreedictionary.com)
  • An arteriovenous fistula may be congenital (usually affecting smaller vessels) or acquired as a result of trauma (eg, a bullet or stab wound) or erosion of an arterial aneurysm into an adjacent vein. (merckmanuals.com)
  • Congenital fistulas need no treatment unless significant complications developing. (merckmanuals.com)
  • Arteriovenous fistula can be congenital or acquired. (sbwire.com)
  • Congenital fistula is formed during fatal development and majorly affects lower extremities of blood vessels. (sbwire.com)
  • Excision of a congenital suboccipital vertebral arteriovenous fistula. (thejns.org)
  • 452 - 456 1972 Bartal AD Levy MJ: Excision of a congenital suboccipital vertebral arteriovenous fistula. (thejns.org)
  • Congenital arteriovenous malformation involving the VEIN OF GALEN, a large deep vein at the base of the brain. (bioportfolio.com)
  • Spinal dural arteriovenous (AV) fistulas are the most commonly encountered vascular malformation of the spinal cord and a treatable cause for progressive para- or tetraplegia. (biomedsearch.com)
  • and autosomal dominant genetic disorders such as Hereditary Hemorrhagic Telangiectasia (Osler-Weber-Rendu syndrome) and Capillary malformation/arteriovenous malformation (CM-AVM) syndrome. (books.com.tw)
  • Sonography In Cranial Arteriovenous Malformation Presenting with Cardiac Failure. (ebscohost.com)
  • A , Initial angiogram reveals a large diffuse arteriovenous malformation (AVM) nidus. (ajnr.org)
  • A moderately sized arteriovenous malformation is shown fed by branches of the left middle cerebral and anterior cerebral arteries. (bmj.com)
  • There has been no significant change in the size of the arteriovenous malformation since the angiogram was performed in 1994. (bmj.com)
  • Hereditary hemorrhagic telangiectasia[citation needed] Just like berry aneurysm, an intracerebral arteriovenous fistula can rupture causing subarachnoid hemorrhage. (wikipedia.org)
  • Most often, the fistulas are due to rupture of an aneurysm of the hepatic or splenic artery, gunshot wound of the abdomen, or the use of mass ligature during abdominal surgery. (biomedsearch.com)
  • A fistula can progress to an aneurysm , usually in the setting of a trauma , carrying a risk of rupture and necessitating surgical intervention. (wikidoc.org)
  • An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. (harvard.edu)
  • Once the material within the excluded aneurysm has solidified, the balloon catheter structure is deflated and removed, so that the hardened mass forms a new lining for the organ or vessel, and relieves the weakened tissue of the aneurysm or fistula from further flow-induced stress. (google.com.au)
  • Coronary Arteriovenous Fistula and Aortic Sinus Aneurysm Rupture. (annals.org)
  • In local experience coronary arteriovenous fistula or aortic sinus of Valsalva aneurysm rupture into the right heart are the two common causes of continuous murmurs with systolic accentuation which are maximum over the lower sternum. (annals.org)
  • This report describes three patients with coronary arteriovenous fistula subjected to successful surgical repair and five patients with anatomically verified aortic sinus aneurysm rupture, two of whom had successful repair. (annals.org)
  • A digital subtraction angiogram demonstrated a large right common iliac artery (CIA) false aneurysm with an arteriovenous fistula between right common iliac vessels. (up.ac.za)
  • What Are Dural Arteriovenous Fistulas (DAVF)? (bcm.edu)
  • A dural arteriovenous fistula (DAVF) is an abnormal connection between the arteries that normally supply the covering of the brain and veins. (emoryhealthcare.org)
  • A dural arteriovenous fistula (DAVF) results when the blood vessels that normally supply the scalp and coverings of the brain (dura mater) have an abnormal direct connection to veins that carry blood away from the brain. (emoryhealthcare.org)
  • Dr. Bradley Gross discusses dural arteriovenous fistula (dAVF) symptoms, diagnosis, and treatment. (upmc.com)
  • The following tests may be used to diagnose your dural arteriovenous fistulae (DAVF) and help identify its size, location and blood-flow pattern. (ucsfhealth.org)
  • Patients with Dural Arteriovenous Fistulas (dAVF) have a few choice for safe treatment. (bioportfolio.com)
  • MRIs can establish the shape and extent of a dAVF, detect any micro-hemorrhages (very small bleed locations), and determine the impact of any abnormal blood vessel structures related to the fistula itself. (sparrow.org)
  • Cranial dural arteriovenous fistulae (DAVF) may occur post-traumatic or sporadic. (nih.gov)
  • Stereotactic radiosurgery (SRS) has become an increasingly important tool for treating dural arteriovenous fistulas (DAVF). (cns.org)
  • Fistulas also can be a complication of liver disease or lung injury, although these causes are much less common. (medlineplus.gov)
  • This is the most serious complication of large arteriovenous fistulas. (mayoclinic.org)
  • After catheterizations, arteriovenous fistulas may occur as a complication of the arterial puncture in the leg or arm. (thefreedictionary.com)
  • Iatrogenic aortocoronary arteriovenous fistula (ACAVF) resulting from placement of an arterial graft to a cardiac vein is a rare complication of coronary artery bypass grafting (CABG) (1,2) . (onlinejacc.org)
  • The objectives of this study were to determine the complication of arteriovenous fistula (AVF) for hemodialysis (HD) and to find out the role of duplex study for the management of fistula complications. (banglajol.info)
  • Arteriovenous fistula as a complication of cerebral angiography. (thejns.org)
  • 263 - 266 1966 Bergström K Lodin H: Arteriovenous fistula as a complication of cerebral angiography. (thejns.org)
  • The complication occurs due to arteriovenous fistula is blood clots, leg pain and bleeding. (futuremarketinsights.com)
  • Angiography is indispensible in defining the fistula. (biomedsearch.com)
  • Cavagna E, D'Andrea P, Schiavon F, Tarroni G. Failing hemodialysis arteriovenous fistula and percutaneous treatment: imaging with CT, MRI and digital subtraction angiography. (springer.com)
  • Tomasian A, Lell M, Currier J, Rahman J, Krishnam MS. Coronary artery to pulmonary artery fistulae with multiple aneurysms: radiological features on dual-source 64-slice CT angiography. (medscape.com)
  • Follow-up angiography 8 months later demonstrated obvious recurrence and progression of the fistula from adjacent feeders. (bioportfolio.com)
  • Postoperative angiography confirmed complete occlusion of the fistula, and the patient remained intact from the procedure.The video can be found here: https://youtu.be/DJvpa8G4olc. (bioportfolio.com)
  • We report a case of an unusual spontaneous obliteration of a spinal dural arteriovenous fistula after diagnosis confirmation through spinal angiography. (bioportfolio.com)
  • Spotting inferior petrosal sinus for embolizing cavernous dural arteriovenous fistula with the help of preoperative computed tomography angiography. (bioportfolio.com)
  • Angiography showed engorged perimedullary veins and a fistula fed by the anterior spinal artery from the right ninth segmental artery and by 2 branches of the left lateral sacral artery. (unboundmedicine.com)
  • The diagnosis of pathological AV fistulas is carried out in image form by way of angiography (eg. (doccheck.com)
  • Coronary angiography revealed a large coronary arteriovenous fistula from the right coronary artery to the main pulmonary artery and a small fistula from the left coronary artery to the main pulmonary artery. (koreamed.org)
  • On CT and digital subtraction angiography he was found to have a temporal lobe pial arteriovenous fistula with bilateral carotid and vertebral rete mirabile. (bmj.com)
  • At a 6-month follow-up, the patient was neurologically intact, and angiography demonstrated no AV fistula. (ovid.com)
  • If your doctor suspects a fistula, you'll have other tests to confirm your diagnosis. (mayoclinic.org)
  • If an arteriovenous fistula is suspected, it is important to make a diagnosis and consult with a specialist quickly to prevent worsening of the disease. (bcm.edu)
  • Duplex ultrasound confirmed the diagnosis of a brachial artery-to-brachial vein arteriovenous fistula (AVF), and the patient underwent surgical repair. (ingentaconnect.com)
  • This video demonstrates the diagnosis and surgical ligation of a C1 dural arteriovenous fistula via a far lateral, transcondylar approach. (bioportfolio.com)
  • Consideration of intracranial arteriovenous fistula in the differential diagnosis of. (ebscohost.com)
  • Intracranial dural arteriovenous fistula diagnosis was confirmed by DSA study after left ECA selective catheterization, which is the most common origin of the afferent arterial feeders. (radiopaedia.org)
  • An arteriovenous fistula (AV fistula) is the connection of a vein and an artery, usually in the forearm, to allow access to the vascular system for hemodialysis, a procedure that performs the functions of the kidneys in people whose kidneys have failed. (encyclopedia.com)
  • When the vein and artery are joined, the vein gradually becomes larger and stronger, creating the fistula that provides vascular access years longer than other types of access and with fewer complications. (encyclopedia.com)
  • When there is an arteriovenous fistula, the pulse in the vein is diminished by direct compression of the supplying artery, resulting in a continuous murmur that may help in diagnosing and locating the fistula. (britannica.com)
  • Pulmonary arteriovenous fistula is an abnormal connection between an artery and vein in the lungs. (medlineplus.gov)
  • An arteriovenous fistula is an abnormal connection or passageway between an artery and a vein. (wikipedia.org)
  • An arteriovenous (AV) fistula is an abnormal connection between an artery and a vein in which blood flows directly from an artery into a vein, bypassing some capillaries. (mayoclinic.org)
  • With an arteriovenous fistula, blood flows directly from an artery into a vein, bypassing some capillaries. (mayoclinic.org)
  • An arteriovenous fistula may occur if you have a piercing injury, such as a gunshot or stab wound, on a part of your body where a vein and artery are side by side. (mayoclinic.org)
  • An arteriovenous fistula in your legs can cause blood clots to form, potentially leading to deep vein thrombosis, a painful and potentially life-threatening condition if the clot travels to your lungs (pulmonary embolism). (mayoclinic.org)
  • This assumption was confirmed by color Doppler imaging, in which a transverse section of the femoral vessels displayed pseudoaneurysm neck (red) and arteriovenous fistula (blue) in full length as 2 parallel tracts, shunting blood from the common femoral artery to the common femoral vein ( Figure , B). (ahajournals.org)
  • These fistulas usually represent an abnormal connection between the segmental dural arterial supply of the root sleeve and the underlying medullary vein. (thejns.org)
  • Bitoh S , Hasegawa H , Fujiwara M , et al : Traumatic arteriovenous fistula between the middle meningeal artery and cortical vein. (thejns.org)
  • The CCTA demonstrates a large fistula between the proximal left anterior descending coronary artery (LAD) (Figure 1) and great cardiac vein (GCV). (appliedradiology.com)
  • Dural arteriovenous fistulas (dAVFs) are abnormal connections between an artery and a vein in the tough covering over the brain or spinal cord (dura mater). (sparrow.org)
  • An AV fistula is surgically created by connecting an artery and vein. (davita.com)
  • An arteriovenous (AV) graft is created by connecting a vein to an artery using a soft plastic tube. (davita.com)
  • A fistula used for hemodialysis is a direct connection of an artery to a vein. (davita.com)
  • The term arteriovenous fistula is used to define an abnormal short-circuit connection between a vein and artery . (doccheck.com)
  • Brinjikji W, Hilditch CA, Morris JM, Dmytriw AA, Cloft H, Pereira VM, Lanzino G, Krings T. Dilated Vein of the Filum Terminale on MRI: A Marker for Deep Lumbar and Sacral Dural and Epidural Arteriovenous Fistulas. (harvard.edu)
  • An arteriovenous fistula (AVF) is an abnormal and permanent communication between an artery and a vein caused by penetrating traumas or iatrogenic injuries. (scielo.br)
  • In the case of an arteriovenous fistula, the blood clot should stop the passage of blood from the artery to the vein. (thefreedictionary.com)
  • New York, NY -- ( SBWIRE ) -- 01/03/2018 -- Arteriovenous Fistula is a disruption of blood flow due to abnormal connection between a vein and artery. (sbwire.com)
  • In condition of arteriovenous fistula, the blood flows directly from arteries to the vein, bypassing capillaries. (sbwire.com)
  • While acquired fistula usually occurs when veins and arteries are damaged and healing process results within two parallel links of vein and artery. (sbwire.com)
  • Various conditions like penetrating injury, rupture of arterial vein and inflammatory necrosis of adjacent vessels increases the risk of arteriovenous fistula. (sbwire.com)
  • DSA confirms a complex dural arteriovenous fistula centered on the lateral wall of the right cavernous sinus-there is no history of nor angiographic evidence of drainage into the superior ophthalmic veins of the orbit or of the inferior petrosal vein. (radiopaedia.org)
  • Fistulas were considered mature after at least 6 weeks of fistula creation with good visualization of arterialized vein and good thrill. (banglajol.info)
  • In this study, we conducted histologic analysis of a segment of the vein used for anastomosis creation, obtained during AVF creation from 554 of the 602 participants in the multicenter Hemodialysis Fistula Maturation Cohort Study. (asnjournals.org)
  • Arteriovenous fistula is also known as abnormal connection between and artery and vein. (futuremarketinsights.com)
  • Arteriovenous fistula is disorder in which blood flow bypassed the pattern and directly flows from artery into vein, this bypass flow effect the tissue present below the capillaries and receive a mixed blood. (futuremarketinsights.com)
  • Arteriovenous Fistula (AVF) is defined as an anomalous communication between an artery and a vein [ 1 ]. (omicsonline.org)
  • We herein presented a very rare cause of PTE due to paradoxical embolism caused by arteriovenous fistula from common iliac artery to common iliac vein. (readbyqxmd.com)
  • The fistula is draining into subarachnoid veins. (britannica.com)
  • The backwards flow within the brain veins indicates that this is the "bad" type of dural arteriovenous fistula. (emoryhealthcare.org)
  • The AV fistula is the solution for this problem because, after 4-6 weeks, the walls of the veins become thicker due to the high arterial pressure. (wikipedia.org)
  • Dural arteriovenous fistulas (DAVFs) are abnormal connections between arteries and veins within the covering of the brain (dura). (bcm.edu)
  • The high pressure within a Type II dural AV fistula causes blood to flow in a retrograde fashion into subarachnoid veins which normally drain into the sinus. (wikipedia.org)
  • Type III dural AV fistulas drain directly into subarachnoid veins. (wikipedia.org)
  • Abnormal passageways between arteries and veins (arteriovenous fistulas) may occur in the brain, spinal cord or other areas of your body. (sparrow.org)
  • Some patients may not be able to have an AV fistula because their arteries and veins are not strong enough. (davita.com)
  • Arteriovenous fistulas form when veins and arteries create abnormal connections. (uclahealth.org)
  • In the case of arteriovenous fistulas, the direct connection results in high-pressure arterial blood flowing directly through veins. (uclahealth.org)
  • Arterial blood has a higher blood pressure than veins and causes swelling of veins involved in a fistula. (thefreedictionary.com)
  • The main symptoms of arteriovenous fistulas near the surface of the skin are bulging and discolored veins. (thefreedictionary.com)
  • If the fistula is near the surface, a mass can be felt, and the affected area is usually swollen and warm with distended, often pulsating superficial veins. (merckmanuals.com)
  • However, the preexisting histologic characteristics of veins at fistula creation, and associations thereof with baseline patient factors, have not been well characterized. (asnjournals.org)
  • AV fistulas are an abnormal connection between arteries and veins. (nyu.edu)
  • The symptoms for arteriovenous fistula is swelling in legs or arms, fatigue, heart failure, and bulging of veins that can view through the skins. (futuremarketinsights.com)
  • Resultant enlarged veins provide access sites for penetration with a fistula. (patents.com)
  • The surgical creation of an AV fistula provides a long-lasting site through which blood can be removed and returned during hemodialysis. (encyclopedia.com)
  • Because of the circulatory strain produced by these fistulas and of the danger of portal hypertension even in the asymptomatic patient, the presence of a portosystemic arteriovenous fistula is sufficient indication for surgical treatment. (biomedsearch.com)
  • showing the surgical approach to the arteriovenous fistula on the lateral aspect of the brain stem and exposure of the fistula. (thejns.org)
  • Patient was referred for surgical consultation and fistula closure. (appliedradiology.com)
  • 3 Large fistulas despite symptoms and small-to moderate size fistulas with evidence of arrhythmia, myocardial ischemia, ventricular enlargement or dysfunction should undergo percutaneous or surgical closure based on American College of Cardiology/American Heart Association class 1 guidelines. (appliedradiology.com)
  • Early surgical intervention of CAVF by surgery or transcatheter closure is indicated due to high prevalence of symptoms and fistula related complications. (appliedradiology.com)
  • Coronary Arteriovenous Fistulas in Adult Patients: Surgical Management and Outcomes. (appliedradiology.com)
  • Far lateral approach for microsurgical ligation of C1 dural arteriovenous fistula: surgical anatomy and technical nuances. (bioportfolio.com)
  • Surgical resection of carotid-jugular arteriovenous fistula after multiple failed embolisation. (bioportfolio.com)
  • After consideration at multidisciplinary review, the patient was referred for surgical ligation of the fistula in December 2008. (ahajournals.org)
  • In addition, surgical procedures are performed for effective treatment of arteriovenous fistula. (sbwire.com)
  • Not to be confused with surgical anastomosis, nor with arteriovenous fistula. (bioportfolio.com)
  • Surgical repair of arteriovenous fistulas is the traditional treatment. (scielo.br)
  • The patient was offered open surgical and endovascular treatment options for pial arteriovenous fistula but he refused both and opted for conservative medical management. (bmj.com)
  • The authors describe two patients with transverse sinus dural arteriovenous fistulas (DAVFs) who presented with headache and papilledema due to intracranial hypertension. (aao.org)
  • Although almost all dural arteriovenous fistulas (DAVFs) can be highly curable using endovascular treatment, some of them are reflactory. (ahajournals.org)
  • Anterior cranial fossa (ACF) dural arteriovenous fistulae (DAVFs) are rare, and a systematic review of the literature is lacking. (medsci.org)
  • Zamani H, Meragi M, Arabi Moghadam MY, Alizadeh B, Babazadeh K, Mokhtari-Esbuie F. Clinical presentation of coronary arteriovenous fistula according to age and anatomic orientation. (appliedradiology.com)
  • Coronary artery fistulas clinical and therapeutic considerations. (appliedradiology.com)
  • Renal arteriovenous fistula is a rare clinical entity that may produce high-output cardiac failure. (ebscohost.com)
  • The clinical presentation of SMAVF is atypical, which depends on the size and location of the fistula. (isciii.es)
  • GlobalData's clinical trial report, "Arteriovenous Fistula Global Clinical Trials Review, H1, 2017 provides an overview of Arteriovenous Fistula clinical trials scenario. (marketresearch.com)
  • This report provides top line data relating to the clinical trials on Arteriovenous Fistula. (marketresearch.com)
  • Timing, severity of deficits, and clinical improvement after surgery for spinal dural arteriovenous fistulas. (annals.org)
  • In addition, presence of large number of therapeutics under clinical pipeline coupled with positive initiatives by government will further boost the market of arteriovenous fistula in near future. (sbwire.com)
  • We present the first described association of rete mirabile with pial arteriovenous fistula and discuss its clinical presentation and imaging features, with a review of the literature for bilateral carotid and vertebral rete mirabile. (bmj.com)
  • To investigate the reason of autogenous arteriovenous fistula failure by analyzing the clinical data of 32 hemodialysis patients in the Department of Nephrology in recent years. (alliedacademies.org)
  • Careful clinical examination and later radiological confirmation diagnosed an arteriovenous fistula. (omicsonline.org)
  • The objective is to describe the clinical, radiographic, echocardiographic and angiographic findings in dogs with systemic-to-pulmonary arteriovenous fistula (SPAVF). (readbyqxmd.com)
  • This prospective, global, multicenter, single arm post-approval study is designed to investigate the clinical use and safety of the Lutonix® 035 AV Drug Coated Balloon PTA Catheter in subjects presenting with clinical and hemodynamic abnormalities in native arteriovenous (AV) fistulae located in the upper extremity. (yale.edu)
  • Of the three patients with coronary arteriovenous fistula, two patients were 20-year-old women, the third was a 24-year-old man. (annals.org)
  • Large arteriovenous fistulae (AVF) can lead to congestive heart failure associated with increased activity of vasoconstrictor neurohormonal systems, the renin-angiotensin , sympathetic nervous system , endothelin system, and Arginine vasopressin . (wikidoc.org)
  • We report the case of a femoral arteriovenous fistula in a young male, who had a firearm wound in his left thigh causing high-output congestive heart failure. (scielo.br)
  • We examine the case of a female evaluated in the emergency department with a vertebral AV fistula presenting classically as pulsatile tinnitus and later successfully treated with standard endovascular techniques. (hindawi.com)
  • Endovascular treatment of vertebro-vertebral arteriovenousfistula: a report of three cases and literature review," The Neuroradiology Journal , vol. 26, no. 3, pp. 339-346, 2013. (hindawi.com)
  • The primary objective of this study is to demonstrate the safety and efficacy of the PHIL® liquid in endovascular treatment of dural arteriovenous fistula. (bioportfolio.com)
  • 4. Hacein-Bey L, Konstas AA, Pile-Spellman J. Natural history, current concepts, classification, factors impacting endovascular therapy, and pathophysiology of cerebral and spinal dural arteriovenous fistulas. (cns.org)
  • Successful Intervention for High-Output Cardiac Failure Caused by Massive Renal Ateriovenous Fistula. (ebscohost.com)
  • A massive renal arteriovenous fistula was. (ebscohost.com)
  • In patients with end-stage renal disease requiring hemodialysis , an arteriovenous fistula is created surgically to provide vascular access for the procedure. (merckmanuals.com)
  • For example, in April 2013, Shire announced phase II study for evaluating efficacy and safety of SRM003 (Vascugel) in patients with arteriovenous fistula and end stage renal disease. (sbwire.com)
  • Renal arteriovenous fistula (rAVF) is an uncommon condition, usually iatrogenic and in most cases caused by percutaneous renal needle biopsy. (scielo.org.za)
  • The AV Fistula Ligation study showed that ligation of the hemodialysis AV fistula in stable post-renal transplant patients improves LV remodeling and also reduces NT-proBNP at 6 months. (acc.org)
  • Fistula First, broadly supported by the renal community and Centers for Medicare and Medicaid Services, proved an effective initiative because its implementation was attended by a steady increase in the percentage of prevalent hemodialysis patients using AVFs ( 7 , 9 , 12 ). (asnjournals.org)
  • A total of 32 end-stage renal disease patients who had forearm arteriovenous fistula failure in our hospital from February 2010 to February 2012 were selected, and another 66 patients who had the successful forearm arteriovenous fistula surgery in the same hospital during the same period were selected. (alliedacademies.org)
  • Cardiorenal syndrome in renal transplant recipients - It's the fistula at fault: A case series. (readbyqxmd.com)
  • The fistula, which allows the person to be connected to a dialysis machine, must be prepared by a surgeon weeks or months before dialysis is started. (encyclopedia.com)
  • When kidney failure is diagnosed, time is needed to prepare the patient's body with either an AV fistula or implantable devices that will connect the person to the dialysis machine. (encyclopedia.com)
  • Among dialysis patients, over half will have an AV fistula as vascular access. (encyclopedia.com)
  • Arteriovenous fistulas are often surgically created for use in dialysis in people with severe kidney disease. (mayoclinic.org)
  • Your doctor monitors your arteriovenous fistula if you have one for dialysis. (mayoclinic.org)
  • People who have late-stage kidney failure may have an arteriovenous fistula surgically created in the forearm to make it easier to perform dialysis. (mayoclinic.org)
  • Usually an AV fistula is made in the arm or leg so it is easily accessible for dialysis treatment. (davita.com)
  • This initiative was started to support better health for Medicare patients on dialysis and lower costs for the Medicare program by increasing the number of hemodialysis patients using fistulas as their hemodialysis access. (davita.com)
  • Many people find out they need dialysis immediately and do not have time for a fistula to be placed and mature. (davita.com)
  • And, each one of them is on dialysis now and using their 35-year-old fistula. (davita.com)
  • During those 10 years before dialysis, Anthony's fistula was maturing along with his body and was ready for treatment when his kidneys failed. (davita.com)
  • The National Kidney Foundation (NKF), Centers for Medicare and Medicaid Services (CMS) and Dialysis Patient Citizens (DPC) agree fistulas are the best type of vascular access. (davita.com)
  • The ladder technique requires you or your dialysis care provider "stick" the fistula vertically in a different place every time. (davita.com)
  • an aid in preventing occlusion of an arteriovenous fistula in dialysis patients? (springer.com)
  • External Manual Carotid Compression is Effective in Patients with Cavernous Sinus Dural Arteriovenous Fistulaetreatment. (wikipedia.org)
  • Patients will be eligible if they are 19 years of age or greater and have placement of an arteriovenous fistula planned witin 30 days. (clinicaltrials.gov)
  • Letter: Swelling of arm in patients with arteriovenous fistula. (bmj.com)
  • However, in patients who develop symptoms indicating disease progression or the pseudoaneurysm/arteriovenous fistula fails to undergo spontaneous thrombosis within 3 months, other treatment options, including surgery or interventional therapy with stent graft of the feeding artery, must be considered. (ahajournals.org)
  • In the case of chronic care, 78% of patients have an arteriovenous fistula. (bioportfolio.com)
  • Patients on hemodialysis with arteriovenous fistula (AVF) can develop pseudo- Kaposi's sarcoma . (wikidoc.org)
  • Five patients with a side-to-side arteriovenous fistula complaining of pain, numbness, and cold sensation were evaluated by pulse oximetry. (nih.gov)
  • Many people are curious as to how long an AV fistula can last - for four DaVita patients, the answer is 35 years. (davita.com)
  • Some studies indicate that people with diabetes, elderly patients and women may not be ideal candidates for a fistula. (davita.com)
  • DaVita patients Anthony Logan, Barbara Raymond, John Horath and John Hart each had an AV fistula placed in 1972. (davita.com)
  • Increased incidence of thrombophilic abnormalities in patients with cranial dural arteriovenous fistulae. (nih.gov)
  • In the case of patients on hemodialysis, physicians perform surgery to create a fistula. (thefreedictionary.com)
  • HealthDay)-The U.S. Food and Drug Administration has permitted marketing of two catheter-based devices designed to create an arteriovenous (AV) fistula in patients with chronic kidney disease in need of hemodialysis. (medicalxpress.com)
  • the AV fistulas are needed before patients can start hemodialysis. (medicalxpress.com)
  • Three months after the procedure, 89.3 percent of the patients met the criteria for a usable AV fistula. (medicalxpress.com)
  • To maintain the fistula, almost all patients (96.1 percent) required an additional procedure in the first 12 months. (medicalxpress.com)
  • Overall, 96.7 percent of patients required an additional procedure at the time that the fistula was created. (medicalxpress.com)
  • Eligible patients were randomized in a 1:1 fashion to either AV fistula ligation (n = 32) or no ligation (n = 31). (acc.org)
  • Patients assigned to the intervention group then underwent AV fistula ligation, which was performed as a same-day procedure under local anesthesia. (acc.org)
  • Rendu-Osler-Weber (ROW) disease is characterised by multiple dermal, mucosal, and visceral telangiectasia that are associated with recurrent bleeding, and by a pulmonary arteriovenous fistula (P-AVF) in 15% of patients. (bmj.com)
  • Dural AV fistulas are rare in the cervical region and extremely unusual in patients less than 20 years of age. (ovid.com)
  • Analysis of arteriovenous fistula failure in hemodialysis patients. (alliedacademies.org)
  • 1. Plethysmographs containing the hand plus forearm were used to measure blood flow in patients with a surgically created arteriovenous fistula in one forearm. (portlandpress.com)
  • Such external arteriovenous shunts are currently in use on a portion of those patients receiving intermittent hemodialysis with artificial kidneys. (patents.com)
  • The native arteriovenous fistula (AVF) is the preferred vascular access because of the lower thrombosis and infe. (bioportfolio.com)
  • Type Ia - simple dural arteriovenous fistulas have a single meningeal arterial supply Type Ib - more complex arteriovenous fistulas are supplied by multiple meningeal arteries The distinction between Types Ia and Ib is somewhat specious as there is a rich system of meningeal arterial collaterals. (wikipedia.org)
  • Carotid-cavernous arterial fistulas (CCF) are also common. (uclahealth.org)
  • dural arteriovenous fistula in the left parasagittal posterior parietal region of the brain, showing afferent arterial branches from the left superficial temporal artery. (radiopaedia.org)
  • This AV fistula did not contribute blood flow to the cervical segment of the spinal cord, which was tested by an intra-arterial injection of methohexital. (ovid.com)
  • 3. After arterial occlusion, blood flow increased by a similar amount on the normal side and on the side with the fistula. (portlandpress.com)
  • Postoperative angiograms, anteroposterior (left) and lateral (right) views, demonstrating complete obliteration of the arteriovenous shunt on the lateral aspect of the brain stem. (thejns.org)
  • Doppler ultrasound indicated the vascular engorgement was not secondary to a proximal arteriovenous shunt. (ajnr.org)
  • There has been uncertainty as to whether a right to left shunt through an isolated pulmonary arteriovenous fistula (P-AVF) without Rendu-Osler-Weber (ROW) disease can cause paradoxical brain embolism. (bmj.com)
  • A universal connector for a blood tubing set having a blood tube attached to one end portion and alternative means on the other end portion of said connector for selectively connecting and locking to the blood tube an external arteriovenous shunt, or a fistula. (patents.com)
  • Connection to the artificial kidney is made by attaching blood tubing from the artificial kidney to the external connectors on each of the two portions of the external plastic tubes forming the arteriovenous shunt. (patents.com)
  • Following occlusion of the fistula, the progression of the disease can be stopped and improvement of symptoms is typically observed. (biomedsearch.com)
  • To achieve complete occlusion of the fistula, a right far lateral approach was chosen with complete disconnection of the fistula. (bioportfolio.com)
  • Confirmation of the optimal implantation and occlusion of the fistula was performed by injection of contrast medium through the introducer ( fig. 3 ). (scielo.br)
  • Sequential angiograms, left posterior oblique views, of the right carotid and vertebral arteries again demonstrating the fibromuscular dysplasia of the vertebral artery with an arteriovenous fistula. (thejns.org)
  • Although a dural or intramedullary arteriovenous fistula involving the conus medullaris and fed by the lateral sacral artery has been reported, a case of perimedullary fistula arising from an artery in the filum terminale has not been described in the literature. (unboundmedicine.com)
  • It must be noted that a fistula can be located in the filum terminale and can be successfully treated using multidisciplinary approaches. (unboundmedicine.com)
  • discussion E220 JF - Neurosurgery JO - Neurosurgery VL - 66 IS - 1 N2 - OBJECTIVE: Although a dural or intramedullary arteriovenous fistula involving the conus medullaris and fed by the lateral sacral artery has been reported, a case of perimedullary fistula arising from an artery in the filum terminale has not been described in the literature. (unboundmedicine.com)
  • Arteriovenous Fistula of the Filum Terminale: A Case Report and Review of the Literature. (harvard.edu)
  • Filum terminale arteriovenous fistulae (FTAVF) are rare entities. (bioportfolio.com)
  • Cerebral Artenovenous Fistula Producing Temporary Heart Failure in a Newborn Infant. (ebscohost.com)
  • In a particular case, a 12-hour old white male infant with a large cerebral arteriovenous fistula had exhibited severe heart failure, yet. (ebscohost.com)
  • Bifrontal approach for clip ligation of bilateral ethmoidal dural arteriovenous fistulas: operative video. (bioportfolio.com)
  • The goal of the trial was to assess the efficacy of arteriovenous (AV) fistula ligation on cardiovascular structure and function in stable kidney transplant recipients. (acc.org)
  • Type I dural fistulas are often asymptomatic, do not have a high risk of bleeding and do not necessarily need to be treated. (wikipedia.org)
  • The arteriovenous fistula (AVF) is the preferred method of long-term haemodialysis. (ovid.com)
  • To evaluate the effect of percutaneous transluminal angioplasty (PTA) on haemodialysis fistulas utilising drug-coated balloons with plain balloon vessel preparation (DCB). (springer.com)
  • Our understanding of spinal extradural arteriovenous fistulas (eAVFs) is relatively limited. (nih.gov)
  • The ideal access types are arteriovenous (AV) graft and AV fistula. (davita.com)
  • Electroporation devices and methods for use in the treatment of complications, such as thrombosis, stenotic segments, or infections, associated with an arteriovenous graft or fistula are provided. (freepatentsonline.com)
  • 2. The method of claim 1, further comprising inserting into the arteriovenous graft or fistula a balloon catheter, a balloon of the balloon catheter carrying the at least two electrodes. (freepatentsonline.com)
  • 4. The method of claim 1, wherein the step of positioning includes: positioning at least a pair of electroporation probes near the target zone and outside of the arteriovenous graft or fistula, each probe carrying at least one electrode. (freepatentsonline.com)
  • The report then estimates 2017-2022 market development trends of Arteriovenous Fistula Drug industry. (researchmoz.us)
  • Health care professionals and kidney disease advocates believe the optimal hemodialysis access is the arteriovenous (AV) fistula . (davita.com)
  • Background and objectives The arteriovenous fistula (AVF) is the preferred hemodialysis access, but AVF-failure rate is high, and complications from AVF placement are rarely reported. (asnjournals.org)
  • The fistula develops over a period of months after the surgery. (encyclopedia.com)
  • The type of surgery you'll need depends on the size and location of your arteriovenous fistula. (mayoclinic.org)
  • Most dural arteriovenous fistulas have no clear origin, although some result from identifiable causes such as traumatic head injury, infection, previous brain surgery or tumors. (sparrow.org)
  • Hollander KN, Goeddel LA. Management of Arteriovenous Fistulas in Cardiac Surgery. (harvard.edu)
  • At surgery a fistula. (ebscohost.com)
  • Small arteriovenous fistulas can be corrected by surgery. (thefreedictionary.com)
  • Surgery is usually used to correct acquired fistulas once they are diagnosed. (thefreedictionary.com)
  • Superior mesenteric arteriovenous fistula (SMAVF) is a rare vascular disorder usually following penetrating abdominal trauma or gastrointestinal surgery. (isciii.es)
  • Acquired fistulas usually have a single large connection and can be effectively treated by surgery. (merckmanuals.com)
  • Staar R, Stoever W, Baldwin W, Hickman L. Arteriovenous fistula complicating lumbar disk surgery: report of a case. (jaoa.org)
  • Blood pressure deviation, swelling in legs or arms, heart failure, fatigue and reddish appearance on the surface of the skin are common symptoms of arteriovenous fistula. (sbwire.com)
  • Pulmonary arteriovenous fistulas are usually the result of abnormal development of the blood vessels of the lung. (medlineplus.gov)
  • Arteriovenous fistulas in the lungs (pulmonary arteriovenous fistulas) can be caused by a genetic disease (Osler-Weber-Rendu disease, also known as hereditary hemorrhagic telangiectasia) that causes blood vessels to develop abnormally throughout your body, but especially in the lungs. (mayoclinic.org)
  • Blood flows more quickly through an arteriovenous fistula than it does through normal blood vessels. (mayoclinic.org)
  • In this treatment, an ultrasound probe is used to compress the fistula and block blood flow to the damaged blood vessels. (mayoclinic.org)
  • Other fistulas can cause more serious problems depending on their location and the blood vessels involved. (thefreedictionary.com)
  • The main goal for arteriovenous fistula treatment is to eliminate the blood flow between affected blood vessels. (sbwire.com)
  • Patency of autogenous and polytetrafluoroethylene upper extremity arteriovenous hemodialysis accesses a systematic review. (springer.com)
  • Stereotactic radiosurgery for intracranial dural arteriovenous fistulas: a systematic review. (cns.org)
  • When an arteriovenous fistula is formed involving a major artery like the abdominal aorta, it can lead to a large decrease in peripheral resistance. (wikipedia.org)
  • An arteriovenous fistula (AVF) involving a major artery such as the abdominal aorta can lead to a large decrease in peripheral resistance , which in turn causes the heart to increase cardiac output in order to maintain proper blood flow to all tissues . (wikidoc.org)
  • Arteriovenous fistula formation in a volunteer allogeneic peripheral blood progenitor cell donor. (ebscohost.com)
  • Peripheral arteriovenous fistulas caused by vascular trauma are rare and are difficult to repair surgically 1 . (scielo.br)
  • A peripheral arteriography was performed, depicting the extension and location of the arteriovenous fistula in the middle third of the left thigh, measuring approximately 12 mm of extension ( fig. 1 ). (scielo.br)
  • Inferior petrosal sinus (IPS) is commonly adopted as a route in embolizing cavernous dural arteriovenous fistula (cDAVF). (bioportfolio.com)
  • MR and CT displayed prominent vessels within the orbit and in the facial region, suggesting a carotid-cavernous fistula. (ajnr.org)
  • A most unusual dural arteriovenous fistula is present, with extensive areas of fistulation shown on the lateral wall of the right cavernous sinus. (radiopaedia.org)
  • The locations of the fistulas were 10 transverse/sigmoid sinus and 2 cavernous sinus. (ahajournals.org)
  • New Concept in Cavernous Sinus Dural Arteriovenous Fistula. (ahajournals.org)
  • If the AV fistula is best, why do people have AV grafts and catheters? (davita.com)
  • This iatrogenic fistula resulted in a dilated tortuous LIMA and radial grafts with possible CSS that explained the ischemia. (onlinejacc.org)
  • Catheter interventions for hemodialysis fistulas and grafts. (springer.com)
  • Inflow stenosis in arteriovenous fistulas and grafts: a multicenter, prospective study. (springer.com)