Intracranial Aneurysm: Abnormal outpouching in the wall of intracranial blood vessels. Most common are the saccular (berry) aneurysms located at branch points in CIRCLE OF WILLIS at the base of the brain. Vessel rupture results in SUBARACHNOID HEMORRHAGE or INTRACRANIAL HEMORRHAGES. Giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the OCULOMOTOR NERVE. (From Adams et al., Principles of Neurology, 6th ed, p841)Aneurysm: 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.Aneurysm, Infected: Aneurysm due to growth of microorganisms in the arterial wall, or infection arising within preexisting arteriosclerotic aneurysms.Aortic Aneurysm: An abnormal balloon- or sac-like dilatation in the wall of AORTA.Heart Aneurysm: A localized bulging or dilatation in the muscle wall of a heart (MYOCARDIUM), usually in the LEFT VENTRICLE. Blood-filled aneurysms are dangerous because they may burst. Fibrous aneurysms interfere with the heart function through the loss of contractility. True aneurysm is bound by the vessel wall or cardiac wall. False aneurysms are HEMATOMA caused by myocardial rupture.Aortic Aneurysm, Thoracic: An abnormal balloon- or sac-like dilatation in the wall of the THORACIC AORTA. This proximal descending portion of aorta gives rise to the visceral and the parietal branches above the aortic hiatus at the diaphragm.Aneurysm, Dissecting: Aneurysm caused by a tear in the TUNICA INTIMA of a blood vessel leading to interstitial HEMORRHAGE, and splitting (dissecting) of the vessel wall, often involving the AORTA. Dissection between the intima and media causes luminal occlusion. Dissection at the media, or between the media and the outer adventitia causes aneurismal dilation.Iliac Aneurysm: 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.Embolization, Therapeutic: 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.Coronary Aneurysm: 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.Blood Vessel Prosthesis Implantation: Surgical insertion of BLOOD VESSEL PROSTHESES to repair injured or diseased blood vessels.Cerebral Angiography: Radiography of the vascular system of the brain after injection of a contrast medium.Aortic Rupture: The tearing or bursting of the wall along any portion of the AORTA, such as thoracic or abdominal. It may result from the rupture of an aneurysm or it may be due to TRAUMA.Aneurysm, False: 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.Blood Vessel Prosthesis: Device constructed of either synthetic or biological material that is used for the repair of injured or diseased blood vessels.Aorta, Abdominal: The aorta from the DIAPHRAGM to the bifurcation into the right and left common iliac arteries.Subarachnoid Hemorrhage: 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.Tomography, X-Ray Computed: Tomography using x-ray transmission and a computer algorithm to reconstruct the image.Endovascular Procedures: 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.Angiography, Digital Subtraction: 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.Aortography: Radiographic visualization of the aorta and its branches by injection of contrast media, using percutaneous puncture or catheterization procedures.Vascular Surgical Procedures: Operative procedures for the treatment of vascular disorders.Treatment Outcome: 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.Surgical Instruments: Hand-held tools or implements used by health professionals for the performance of surgical tasks.Stents: Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.Angiography: Radiography of blood vessels after injection of a contrast medium.Postoperative Complications: 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.Prosthesis Design: The plan and delineation of prostheses in general or a specific prosthesis.Follow-Up Studies: 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.Anterior Cerebral Artery: Artery formed by the bifurcation of the internal carotid artery (CAROTID ARTERY, INTERNAL). Branches of the anterior cerebral artery supply the CAUDATE NUCLEUS; INTERNAL CAPSULE; PUTAMEN; SEPTAL NUCLEI; GYRUS CINGULI; and surfaces of the FRONTAL LOBE and PARIETAL LOBE.Retrospective Studies: 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.Carotid Artery, Internal: Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.Iliac Artery: Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.Neurosurgical Procedures: Surgery performed on the nervous system or its parts.Endoleak: Postoperative hemorrhage from an endovascular AORTIC ANEURYSM repaired with endoluminal placement of stent grafts (BLOOD VESSEL PROSTHESIS IMPLANTATION). It is associated with pressurization, expansion, and eventual rupture of the aneurysm.Aortitis: Inflammation of the wall of the AORTA.Platinum: Platinum. A heavy, soft, whitish metal, resembling tin, atomic number 78, atomic weight 195.09, symbol Pt. (From Dorland, 28th ed) It is used in manufacturing equipment for laboratory and industrial use. It occurs as a black powder (platinum black) and as a spongy substance (spongy platinum) and may have been known in Pliny's time as "alutiae".Carotid Artery Diseases: Pathological conditions involving the CAROTID ARTERIES, including the common, internal, and external carotid arteries. ATHEROSCLEROSIS and TRAUMA are relatively frequent causes of carotid artery pathology.Polyethylene Terephthalates: 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.Splenic Artery: The largest branch of the celiac trunk with distribution to the spleen, pancreas, stomach and greater omentum.Angioplasty: Reconstruction or repair of a blood vessel, which includes the widening of a pathological narrowing of an artery or vein by the removal of atheromatous plaque material and/or the endothelial lining as well, or by dilatation (BALLOON ANGIOPLASTY) to compress an ATHEROMA. Except for ENDARTERECTOMY, usually these procedures are performed via catheterization as minimally invasive ENDOVASCULAR PROCEDURES.Reoperation: A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.Balloon Occlusion: Use of a balloon CATHETER to block the flow of blood through an artery or vein.Renal Artery: A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.Sinus of Valsalva: The dilatation of the aortic wall behind each of the cusps of the aortic valve.Imaging, Three-Dimensional: The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.Time Factors: Elements of limited time intervals, contributing to particular results or situations.Vertebral Artery: The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.Pancreatic Elastase: A protease of broad specificity, obtained from dried pancreas. Molecular weight is approximately 25,000. The enzyme breaks down elastin, the specific protein of elastic fibers, and digests other proteins such as fibrin, hemoglobin, and albumin. EC 3.4.21.36.Cerebral Arteries: The arterial blood vessels supplying the CEREBRUM.Dilatation, Pathologic: The condition of an anatomical structure's being dilated beyond normal dimensions.Retreatment: The therapy of the same disease in a patient, with the same agent or procedure repeated after initial treatment, or with an additional or alternate measure or follow-up. It does not include therapy which requires more than one administration of a therapeutic agent or regimen. Retreatment is often used with reference to a different modality when the original one was inadequate, harmful, or unsuccessful.Posterior Cerebral Artery: Artery formed by the bifurcation of the BASILAR ARTERY. Branches of the posterior cerebral artery supply portions of the OCCIPITAL LOBE; PARIETAL LOBE; inferior temporal gyrus, brainstem, and CHOROID PLEXUS.Celiac Artery: The arterial trunk that arises from the abdominal aorta and after a short course divides into the left gastric, common hepatic and splenic arteries.Anastomosis, Surgical: 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.Basilar Artery: The artery formed by the union of the right and left vertebral arteries; it runs from the lower to the upper border of the pons, where it bifurcates into the two posterior cerebral arteries.Mesenteric Artery, Superior: A large vessel supplying the whole length of the small intestine except the superior part of the duodenum. It also supplies the cecum and the ascending part of the colon and about half the transverse part of the colon. It arises from the anterior surface of the aorta below the celiac artery at the level of the first lumbar vertebra.Marfan Syndrome: An autosomal dominant disorder of CONNECTIVE TISSUE with abnormal features in the heart, the eye, and the skeleton. Cardiovascular manifestations include MITRAL VALVE PROLAPSE, dilation of the AORTA, and aortic dissection. Other features include lens displacement (ectopia lentis), disproportioned long limbs and enlarged DURA MATER (dural ectasia). Marfan syndrome is associated with mutations in the gene encoding fibrillin, a major element of extracellular microfibrils of connective tissue.Prosthesis Failure: Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.Foreign-Body Migration: Migration of a foreign body from its original location to some other location in the body.Circle of Willis: A polygonal anastomosis at the base of the brain formed by the internal carotid (CAROTID ARTERY, INTERNAL), proximal parts of the anterior, middle, and posterior cerebral arteries (ANTERIOR CEREBRAL ARTERY; MIDDLE CEREBRAL ARTERY; POSTERIOR CEREBRAL ARTERY), the anterior communicating artery and the posterior communicating arteries.Craniotomy: Any operation on the cranium or incision into the cranium. (Dorland, 28th ed)Microsurgery: The performance of surgical procedures with the aid of a microscope.Equipment Design: Methods of creating machines and devices.Risk Factors: An aspect of personal behavior or lifestyle, environmental exposure, or inborn or inherited characteristic, which, on the basis of epidemiologic evidence, is known to be associated with a health-related condition considered important to prevent.Subclavian Artery: 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.Cerebral Revascularization: Microsurgical revascularization to improve intracranial circulation. It usually involves joining the extracranial circulation to the intracranial circulation but may include extracranial revascularization (e.g., subclavian-vertebral artery bypass, subclavian-external carotid artery bypass). It is performed by joining two arteries (direct anastomosis or use of graft) or by free autologous transplantation of highly vascularized tissue to the surface of the brain.Aorta, Thoracic: The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.Mucocutaneous Lymph Node Syndrome: An acute, febrile, mucocutaneous condition accompanied by swelling of cervical lymph nodes in infants and young children. The principal symptoms are fever, congestion of the ocular conjunctivae, reddening of the lips and oral cavity, protuberance of tongue papillae, and edema or erythema of the extremities.Risk Assessment: The qualitative or quantitative estimation of the likelihood of adverse effects that may result from exposure to specified health hazards or from the absence of beneficial influences. (Last, Dictionary of Epidemiology, 1988)Popliteal Artery: The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.Vascular Fistula: An abnormal passage between two or more BLOOD VESSELS, between ARTERIES; VEINS; or between an artery and a vein.Radiography, Interventional: 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.Models, Cardiovascular: Theoretical representations that simulate the behavior or activity of the cardiovascular system, processes, or phenomena; includes the use of mathematical equations, computers and other electronic equipment.Vertebral Artery Dissection: Splitting of the vessel wall in the VERTEBRAL ARTERY. Interstitial hemorrhage into the media of the vessel wall can lead to occlusion of the vertebral artery, aneurysm formation, or THROMBOEMBOLISM. Vertebral artery dissection is often associated with TRAUMA and injuries to the head-neck region but can occur spontaneously.Carotid Artery, Internal, Dissection: The splitting of the vessel wall in one or both (left and right) internal carotid arteries (CAROTID ARTERY, INTERNAL). Interstitial hemorrhage into the media of the vessel wall can lead to occlusion of the internal carotid artery and aneurysm formation.Mechanical Thrombolysis: Procedures to cause the disintegration of THROMBI by physical interventions.Recurrence: The return of a sign, symptom, or disease after a remission.Incidental Findings: Unanticipated information discovered in the course of testing or medical care. Used in discussions of information that may have social or psychological consequences, such as when it is learned that a child's biological father is someone other than the putative father, or that a person tested for one disease or disorder has, or is at risk for, something else.Arteriovenous Fistula: 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.Mesenteric Artery, Inferior: 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.Thrombosis: Formation and development of a thrombus or blood clot in the blood vessel.Aortic Diseases: Pathological processes involving any part of the AORTA.Femoral Artery: The main artery of the thigh, a continuation of the external iliac artery.Glasgow Outcome Scale: A scale that assesses the outcome of serious craniocerebral injuries, based on the level of regained social functioning.Fatal Outcome: Death resulting from the presence of a disease in an individual, as shown by a single case report or a limited number of patients. This should be differentiated from DEATH, the physiological cessation of life and from MORTALITY, an epidemiological or statistical concept.Coated Materials, Biocompatible: Biocompatible materials usually used in dental and bone implants that enhance biologic fixation, thereby increasing the bond strength between the coated material and bone, and minimize possible biological effects that may result from the implant itself.Polytetrafluoroethylene: 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.Intracranial Thrombosis: Formation or presence of a blood clot (THROMBUS) in a blood vessel within the SKULL. Intracranial thrombosis can lead to thrombotic occlusions and BRAIN INFARCTION. The majority of the thrombotic occlusions are associated with ATHEROSCLEROSIS.Tomography, Spiral Computed: Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.Intracranial Arteriovenous Malformations: 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.Vascular Patency: The degree to which BLOOD VESSELS are not blocked or obstructed.Ligation: Application of a ligature to tie a vessel or strangulate a part.Prospective Studies: 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.ElastinCerebral Hemorrhage: Bleeding into one or both CEREBRAL HEMISPHERES including the BASAL GANGLIA and the CEREBRAL CORTEX. It is often associated with HYPERTENSION and CRANIOCEREBRAL TRAUMA.Equipment Failure Analysis: The evaluation of incidents involving the loss of function of a device. These evaluations are used for a variety of purposes such as to determine the failure rates, the causes of failures, costs of failures, and the reliability and maintainability of devices.Feasibility Studies: Studies to determine the advantages or disadvantages, practicability, or capability of accomplishing a projected plan, study, or project.Patient Selection: Criteria and standards used for the determination of the appropriateness of the inclusion of patients with specific conditions in proposed treatment plans and the criteria used for the inclusion of subjects in various clinical trials and other research protocols.Intraoperative Complications: Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.Paraplegia: Severe or complete loss of motor function in the lower extremities and lower portions of the trunk. This condition is most often associated with SPINAL CORD DISEASES, although BRAIN DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; NEUROMUSCULAR DISEASES; and MUSCULAR DISEASES may also cause bilateral leg weakness.Buttocks: Either of two fleshy protuberances at the lower posterior section of the trunk or HIP in humans and primate on which a person or animal sits, consisting of gluteal MUSCLES and fat.Catheterization: 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.Carotid Artery, Common: The two principal arteries supplying the structures of the head and neck. They ascend in the neck, one on each side, and at the level of the upper border of the thyroid cartilage, each divides into two branches, the external (CAROTID ARTERY, EXTERNAL) and internal (CAROTID ARTERY, INTERNAL) carotid arteries.Loeys-Dietz Syndrome: An autosomal dominant aneurysm with multisystem abnormalities caused by increased TGF-BETA signaling due to mutations in type I or II of TGF-BETA RECEPTOR. Additional craniofacial features include CLEFT PALATE; CRANIOSYNOSTOSIS; HYPERTELORISM; or bifid uvula. Phenotypes closely resemble MARFAN SYNDROME; Marfanoid craniosynostosis syndrome (Shprintzen-Goldberg syndrome); and EHLERS-DANLOS SYNDROME.Magnetic Resonance Imaging: 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.Spinal Cord Ischemia: Reduced blood flow to the spinal cord which is supplied by the anterior spinal artery and the paired posterior spinal arteries. This condition may be associated with ARTERIOSCLEROSIS, trauma, emboli, diseases of the aorta, and other disorders. Prolonged ischemia may lead to INFARCTION of spinal cord tissue.Aorta: The main trunk of the systemic arteries.Arterial Occlusive Diseases: Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.Vascular Grafting: Surgical insertion of BLOOD VESSEL PROSTHESES, or transplanted BLOOD VESSELS, or other biological material to repair injured or diseased blood vessels.Viscera: Any of the large interior organs in any one of the three great cavities of the body, especially in the abdomen.Ophthalmic Artery: Artery originating from the internal carotid artery and distributing to the eye, orbit and adjacent facial structures.Behcet Syndrome: Rare chronic inflammatory disease involving the small blood vessels. It is of unknown etiology and characterized by mucocutaneous ulceration in the mouth and genital region and uveitis with hypopyon. The neuro-ocular form may cause blindness and death. SYNOVITIS; THROMBOPHLEBITIS; gastrointestinal ulcerations; RETINAL VASCULITIS; and OPTIC ATROPHY may occur as well.Elastic Tissue: Connective tissue comprised chiefly of elastic fibers. Elastic fibers have two components: ELASTIN and MICROFIBRILS.Brachiocephalic Trunk: The first and largest artery branching from the aortic arch. It distributes blood to the right side of the head and neck and to the right arm.Disease Models, Animal: Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.Esophageal Fistula: Abnormal passage communicating with the ESOPHAGUS. The most common type is TRACHEOESOPHAGEAL FISTULA between the esophagus and the TRACHEA.Survival Rate: The proportion of survivors in a group, e.g., of patients, studied and followed over a period, or the proportion of persons in a specified group alive at the beginning of a time interval who survive to the end of the interval. It is often studied using life table methods.Cranial Nerve Diseases: 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.Prostheses and Implants: Artificial substitutes for body parts, and materials inserted into tissue for functional, cosmetic, or therapeutic purposes. Prostheses can be functional, as in the case of artificial arms and legs, or cosmetic, as in the case of an artificial eye. Implants, all surgically inserted or grafted into the body, tend to be used therapeutically. IMPLANTS, EXPERIMENTAL is available for those used experimentally.Predictive Value of Tests: In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.Axillary Artery: The continuation of the subclavian artery; it distributes over the upper limb, axilla, chest and shoulder.Oculomotor Nerve Diseases: Diseases of the oculomotor nerve or nucleus that result in weakness or paralysis of the superior rectus, inferior rectus, medial rectus, inferior oblique, or levator palpebrae muscles, or impaired parasympathetic innervation to the pupil. With a complete oculomotor palsy, the eyelid will be paralyzed, the eye will be in an abducted and inferior position, and the pupil will be markedly dilated. Commonly associated conditions include neoplasms, CRANIOCEREBRAL TRAUMA, ischemia (especially in association with DIABETES MELLITUS), and aneurysmal compression. (From Adams et al., Principles of Neurology, 6th ed, p270)Suture Techniques: Techniques for securing together the edges of a wound, with loops of thread or similar materials (SUTURES).Fistula: Abnormal communication most commonly seen between two internal organs, or between an internal organ and the surface of the body.Hematoma: A collection of blood outside the BLOOD VESSELS. Hematoma can be localized in an organ, space, or tissue.Aortic Coarctation: A birth defect characterized by the narrowing of the AORTA that can be of varying degree and at any point from the transverse arch to the iliac bifurcation. Aortic coarctation causes arterial HYPERTENSION before the point of narrowing and arterial HYPOTENSION beyond the narrowed portion.Matrix Metalloproteinase 9: An endopeptidase that is structurally similar to MATRIX METALLOPROTEINASE 2. It degrades GELATIN types I and V; COLLAGEN TYPE IV; and COLLAGEN TYPE V.Hospital Mortality: A vital statistic measuring or recording the rate of death from any cause in hospitalized populations.Transducers, Pressure: Transducers that are activated by pressure changes, e.g., blood pressure.Arteries: The vessels carrying blood away from the heart.Length of Stay: The period of confinement of a patient to a hospital or other health facility.Ultrasonography, Doppler, Duplex: 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.Replantation: Restoration of an organ or other structure to its original site.Hepatic Artery: A branch of the celiac artery that distributes to the stomach, pancreas, duodenum, liver, gallbladder, and greater omentum.Incidence: The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases, new or old, in the population at a given time.Equipment Safety: Freedom of equipment from actual or potential hazards.Severity of Illness Index: Levels within a diagnostic group which are established by various measurement criteria applied to the seriousness of a patient's disorder.Temporal Arteries: Arteries arising from the external carotid or the maxillary artery and distributing to the temporal region.Vasospasm, Intracranial: Constriction of arteries in the SKULL due to sudden, sharp, and often persistent smooth muscle contraction in blood vessels. Intracranial vasospasm results in reduced vessel lumen caliber, restricted blood flow to the brain, and BRAIN ISCHEMIA that may lead to hypoxic-ischemic brain injury (HYPOXIA-ISCHEMIA, BRAIN).Image Processing, Computer-Assisted: A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.Disease Progression: The worsening of a disease over time. This concept is most often used for chronic and incurable diseases where the stage of the disease is an important determinant of therapy and prognosis.Sensitivity and Specificity: Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)Constriction: The act of constricting.Echocardiography, Transesophageal: Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.Saphenous Vein: The vein which drains the foot and leg.Radiographic Image Interpretation, Computer-Assisted: Computer systems or networks designed to provide radiographic interpretive information.Surgical Procedures, Minimally Invasive: Procedures that avoid use of open, invasive surgery in favor of closed or local surgery. These generally involve use of laparoscopic devices and remote-control manipulation of instruments with indirect observation of the surgical field through an endoscope or similar device.Enbucrilate: 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.Models, Anatomic: Three-dimensional representation to show anatomic structures. Models may be used in place of intact animals or organisms for teaching, practice, and study.Arteritis: INFLAMMATION of any ARTERIES.Intestinal Fistula: 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).Cyanoacrylates: A group of compounds having the general formula CH2=C(CN)-COOR; it polymerizes on contact with moisture; used as tissue adhesive; higher homologs have hemostatic and antibacterial properties.Middle Cerebral Artery: The largest of the cerebral arteries. It trifurcates into temporal, frontal, and parietal branches supplying blood to most of the parenchyma of these lobes in the CEREBRAL CORTEX. These are the areas involved in motor, sensory, and speech activities.Matrix Metalloproteinase 2: A secreted endopeptidase homologous with INTERSTITIAL COLLAGENASE, but which possesses an additional fibronectin-like domain.Vertebrobasilar Insufficiency: Localized or diffuse reduction in blood flow through the vertebrobasilar arterial system, which supplies the BRAIN STEM; CEREBELLUM; OCCIPITAL LOBE; medial TEMPORAL LOBE; and THALAMUS. Characteristic clinical features include SYNCOPE; lightheadedness; visual disturbances; and VERTIGO. BRAIN STEM INFARCTIONS or other BRAIN INFARCTION may be associated.Ischemia: 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.Chi-Square Distribution: A distribution in which a variable is distributed like the sum of the squares of any given independent random variable, each of which has a normal distribution with mean of zero and variance of one. The chi-square test is a statistical test based on comparison of a test statistic to a chi-square distribution. The oldest of these tests are used to detect whether two or more population distributions differ from one another.Cerebrovascular Circulation: The circulation of blood through the BLOOD VESSELS of the BRAIN.Neurologic Examination: Assessment of sensory and motor responses and reflexes that is used to determine impairment of the nervous system.Preoperative Care: 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)Pulsatile Flow: Rhythmic, intermittent propagation of a fluid through a BLOOD VESSEL or piping system, in contrast to constant, smooth propagation, which produces laminar flow.Databases as Topic: Organized collections of computer records, standardized in format and content, that are stored in any of a variety of computer-readable modes. They are the basic sets of data from which computer-readable files are created. (from ALA Glossary of Library and Information Science, 1983)Intracranial Embolism and Thrombosis: Embolism or thrombosis involving blood vessels which supply intracranial structures. Emboli may originate from extracranial or intracranial sources. Thrombosis may occur in arterial or venous structures.Tissue Adhesives: Substances used to cause adherence of tissue to tissue or tissue to non-tissue surfaces, as for prostheses.Paraparesis: 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.Emergencies: Situations or conditions requiring immediate intervention to avoid serious adverse results.Stress, Mechanical: A purely physical condition which exists within any material because of strain or deformation by external forces or by non-uniform thermal expansion; expressed quantitatively in units of force per unit area.Kaplan-Meier Estimate: A nonparametric method of compiling LIFE TABLES or survival tables. It combines calculated probabilities of survival and estimates to allow for observations occurring beyond a measurement threshold, which are assumed to occur randomly. Time intervals are defined as ending each time an event occurs and are therefore unequal. (From Last, A Dictionary of Epidemiology, 1995)Cardiovascular Surgical Procedures: Surgery performed on the heart or blood vessels.Alloys: A mixture of metallic elements or compounds with other metallic or metalloid elements in varying proportions.Arterio-Arterial Fistula: Abnormal communication between two ARTERIES that may result from injury or occur as a congenital abnormality.Retroperitoneal Space: An area occupying the most posterior aspect of the ABDOMINAL CAVITY. It is bounded laterally by the borders of the quadratus lumborum muscles and extends from the DIAPHRAGM to the brim of the true PELVIS, where it continues as the pelvic extraperitoneal space.Carotid Arteries: Either of the two principal arteries on both sides of the neck that supply blood to the head and neck; each divides into two branches, the internal carotid artery and the external carotid artery.Laparotomy: Incision into the side of the abdomen between the ribs and pelvis.Takayasu Arteritis: A chronic inflammatory process that affects the AORTA and its primary branches, such as the brachiocephalic artery (BRACHIOCEPHALIC TRUNK) and CAROTID ARTERIES. It results in progressive arterial stenosis, occlusion, and aneurysm formation. The pulse in the arm is hard to detect. Patients with aortitis syndrome often exhibit retinopathy.Doxycycline: A synthetic tetracycline derivative with similar antimicrobial activity.Cerebellum: The part of brain that lies behind the BRAIN STEM in the posterior base of skull (CRANIAL FOSSA, POSTERIOR). It is also known as the "little brain" with convolutions similar to those of CEREBRAL CORTEX, inner white matter, and deep cerebellar nuclei. Its function is to coordinate voluntary movements, maintain balance, and learn motor skills.Tuberculosis, Cardiovascular: Pathological conditions of the CARDIOVASCULAR SYSTEM caused by infection of MYCOBACTERIUM TUBERCULOSIS. Tuberculosis involvement may include the HEART; the BLOOD VESSELS; or the PERICARDIUM.Thromboembolism: Obstruction of a blood vessel (embolism) by a blood clot (THROMBUS) in the blood stream.Graft Occlusion, Vascular: Obstruction of flow in biological or prosthetic vascular grafts.Hematoma, Subdural, Acute: Accumulation of blood in the SUBDURAL SPACE with acute onset of neurological symptoms. Symptoms may include loss of consciousness, severe HEADACHE, and deteriorating mental status.Hemoptysis: Expectoration or spitting of blood originating from any part of the RESPIRATORY TRACT, usually from hemorrhage in the lung parenchyma (PULMONARY ALVEOLI) and the BRONCHIAL ARTERIES.Survival Analysis: A class of statistical procedures for estimating the survival function (function of time, starting with a population 100% well at a given time and providing the percentage of the population still well at later times). The survival analysis is then used for making inferences about the effects of treatments, prognostic factors, exposures, and other covariates on the function.Popliteal Vein: The vein formed by the union of the anterior and posterior tibial veins; it courses through the popliteal space and becomes the femoral vein.Equipment and Supplies: Expendable and nonexpendable equipment, supplies, apparatus, and instruments that are used in diagnostic, surgical, therapeutic, scientific, and experimental procedures.Catheterization, Peripheral: Insertion of a catheter into a peripheral artery, vein, or airway for diagnostic or therapeutic purposes.Emergency Treatment: First aid or other immediate intervention for accidents or medical conditions requiring immediate care and treatment before definitive medical and surgical management can be procured.Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Retroperitoneal Fibrosis: A slowly progressive condition of unknown etiology, characterized by deposition of fibrous tissue in the retroperitoneal space compressing the ureters, great vessels, bile duct, and other structures. When associated with abdominal aortic aneurysm, it may be called chronic periaortitis or inflammatory perianeurysmal fibrosis.Coronary Angiography: Radiography of the vascular system of the heart muscle after injection of a contrast medium.Fibromuscular Dysplasia: An idiopathic, segmental, nonatheromatous disease of the musculature of arterial walls, leading to STENOSIS of small and medium-sized arteries. There is true proliferation of SMOOTH MUSCLE CELLS and fibrous tissue. Fibromuscular dysplasia lesions are smooth stenosis and occur most often in the renal and carotid arteries. They may also occur in other peripheral arteries of the extremity.Intraoperative Care: Patient care procedures performed during the operation that are ancillary to the actual surgery. It includes monitoring, fluid therapy, medication, transfusion, anesthesia, radiography, and laboratory tests.Shear Strength: The internal resistance of a material to moving some parts of it parallel to a fixed plane, in contrast to stretching (TENSILE STRENGTH) or compression (COMPRESSIVE STRENGTH). Ionic crystals are brittle because, when subjected to shear, ions of the same charge are brought next to each other, which causes repulsion.Cardiac Surgical Procedures: Surgery performed on the heart.Basal Ganglia Cerebrovascular Disease: A pathological condition caused by impaired blood flow in the basal regions of cerebral hemispheres (BASAL GANGLIA), such as INFARCTION; HEMORRHAGE; or ISCHEMIA in vessels of this brain region including the lateral lenticulostriate arteries. Primary clinical manifestations include involuntary movements (DYSKINESIAS) and muscle weakness (HEMIPARESIS).Observer Variation: The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).Rupture: Forcible or traumatic tear or break of an organ or other soft part of the body.Embolism: Blocking of a blood vessel by an embolus which can be a blood clot or other undissolved material in the blood stream.Neurosurgery: A surgical specialty concerned with the treatment of diseases and disorders of the brain, spinal cord, and peripheral and sympathetic nervous system.Logistic Models: Statistical models which describe the relationship between a qualitative dependent variable (that is, one which can take only certain discrete values, such as the presence or absence of a disease) and an independent variable. A common application is in epidemiology for estimating an individual's risk (probability of a disease) as a function of a given risk factor.

Serum triglyceride: a possible risk factor for ruptured abdominal aortic aneurysm. (1/956)

BACKGROUND: We aimed to determine the relationship between ruptured abdominal aortic aneurysm (AAA) and serum concentrations of lipids and apolipoproteins. METHODS: A cohort of 21 520 men, aged 35-64 years, was recruited from men attending the British United Provident Association (BUPA) clinic in London for a routine medical examination in 1975-1982. Smoking habits, weight, height and blood pressure were recorded at entry. Lipids and apolipoproteins were measured in stored serum samples from the 30 men who subsequently died of ruptured AAA and 150 matched controls. RESULTS: Triglyceride was strongly related to risk of ruptured AAA. In univariate analyses the risk in men on the 90th centile of the distribution relative to the risk in men on the 10th (RO10-90) was 12 (95% confidence interval [CI] : 3.8-37) for triglyceride, 5.5 (95% CI: 1.8-17) for apolipoprotein B (apoB) (the protein component of low density lipoprotein [LDL]), 0.15 (95% CI : 0.04-0.56) for apo A1 (the protein component of high density lipoprotein [HDL]), 3.7 (95% CI: 1.4-9.4) for body mass index and 3.0 (95% CI: 1.1-8.5) for systolic blood pressure. Lipoprotein (a) (Lp(a)) was not a significant risk factor (RO10-90 = 1.6, 95% CI: 0.6-3.0). In multivariate analysis triglyceride retained its strong association. CONCLUSION: Triglyceride appears to be a strong risk factor for ruptured AAA, although further studies are required to clarify this. If this and other associations are cause and effect, then changing the distribution of risk factors in the population (by many people stopping smoking and adopting a lower saturated fat diet and by lowering blood pressure) could achieve an important reduction in mortality from ruptured AAA.  (+info)

Transcatheter arterial embolization for impending rupture of an isolated internal iliac artery aneurysm complicated with disseminated intravascular coagulation. (2/956)

A 90-year-old male, with impending rupture of an isolated internal iliac artery aneurysm (IIAA) complicated with disseminated intravascular coagulation (DIC) was successfully treated with transcatheter arterial embolization (TAE). After TAE, enlargement of the aneurysm was arrested and coagulation-fibrinolytic abnormalities induced by DIC improved without severe complications. Although IIAA is relatively rare, the post-operative mortality of patients with ruptures is reportedly high. We assessed the usefulness of this procedure for impending rupture of IIAA, especially for patients in high risk groups.  (+info)

Combination therapy of fasudil hydrochloride and ozagrel sodium for cerebral vasospasm following aneurysmal subarachnoid hemorrhage. (3/956)

Fasudil hydrochloride is a new type of intracellular calcium antagonist, different from the calcium entry blockers that are commonly employed for clinical use. Since September 1995, the combination of fasudil hydrochloride and ozagrel sodium, an inhibitor of thromboxane A2 synthesis, has been used to treat 60 patients at risk of cerebral vasospasm after aneurysmal subarachnoid hemorrhage. The effectiveness of this combination therapy was investigated by comparison with the outcome of 57 patients previously treated with only ozagrel sodium. The combination therapy was significantly more effective (p < 0.01) in reducing the incidence of low density areas on computed tomography scans, and reduced, but not significantly, the occurrence of symptomatic vasospasm. The combination therapy of fasudil hydrochloride and ozagrel sodium has superior effectiveness over only ozagrel sodium in treating patients at risk of vasospasm after aneurysmal subarachnoid hemorrhage.  (+info)

Significance of acute cerebral swelling in patients with sylvian hematoma due to ruptured middle cerebral artery aneurysm, and its management. (4/956)

A retrospective study of 75 patients treated surgically for ruptured middle cerebral artery (MCA) aneurysm within 48 hours evaluated clinical grade at admission, secondary development and management of cerebral swelling associated with space-occupying hematoma, cerebral infarction caused by vasospasm, development of hydrocephalus, and clinical outcome. Clinical grade at admission was significantly better in patients without than in those with hematoma (p < 0.01). Twenty-seven patients with sylvian hematoma caused by ruptured MCA aneurysm often developed ipsilateral cerebral swelling in the early period after subarachnoid hemorrhage. Seventeen of these patients developed serious cerebral swelling and received barbiturate therapy. Nine of these 17 patients had good outcome, but six patients died of cerebral swelling. The incidence of hydrocephalus was significantly higher in patients with than in those without hematoma (p < 0.01). The incidence of infarction was more pronounced in patients with sylvian hematoma. Clinical outcome was significantly better in patients without than in those with sylvian hematoma (p < 0.01). Development of cerebral swelling in patients with sylvian hematoma due to ruptured MCA aneurysm has a significant effect on outcome, and improvements in management are required.  (+info)

Rupture mechanism of a thrombosed slow-growing giant aneurysm of the vertebral artery--case report. (5/956)

A 76-year-old male developed left hemiparesis in July 1991. The diagnosis was thrombosed giant vertebral artery aneurysm. He showed progressive symptoms and signs of brainstem compression, but refused surgery and was followed up without treatment. He died of rupture of the aneurysm and underwent autopsy in March 1995. Histological examination of the aneurysm revealed fresh clot in the aneurysmal lumen, old thrombus surrounding the aneurysmal lumen, and more recent hemorrhage between the old thrombus and the inner aneurysmal wall. The most important histological feature was the many clefts containing fresh blood clots in the old thrombus near the wall of the distal neck. These clefts were not lined with endothelial cells, and seemed to connect the lumen of the parent artery with the most peripheral fresh hemorrhage. However, the diameter of each of these clefts is apparently not large enough to transmit the blood pressure of the parent artery. Simple dissection of the aneurysmal wall by blood flow in the lumen through many clefts in the old thrombus of the distal neck may be involved in the growth and rupture of thrombosed giant aneurysms of the vertebral artery.  (+info)

Management of true aneurysms of the pancreaticoduodenal arteries. (6/956)

OBJECTIVE: To review the authors' recent experience and that of the literature since 1973 and to provide management guidelines for true aneurysms of the pancreaticoduodenal arteries (PDA). SUMMARY BACKGROUND DATA: True aneurysms of the PDA are rare, with a total of only 52 cases reported since 1973. METHODS: Six patients were admitted to the authors' institution between 1985 and 1995 for rupture of a true aneurysm of the PDA. They were analyzed with regard to the mode of presentation, preoperative workup, management, and outcome. RESULTS: All patients had severe epigastric pain from retroperitoneal hemorrhage. Computed tomography scanning and angiography were performed in all cases. Aneurysms ranged from 0.7 to 1.2 cm (median 0.9 cm). The celiac axis was stenotic or occluded in five cases. Three patients underwent emergency pancreatoduodenectomy. Two of them survived. In one case, section of the median arcuate ligament was associated with the procedure, and the patient died from an aortic dissection. Embolization was performed in the last three patients. The procedure was definitive in two cases. In one, hemorrhage recurred 8 days later and required surgical ligation of the bleeding artery. CONCLUSIONS: The authors recommend rapid treatment of all true aneurysms of the PDA. Because most of these aneurysms result from a stenosis of the celiac axis, selective embolization may help to preserve patency of the PDA and should, therefore, be the primary therapeutic choice in ruptured aneurysms. Close follow-up is mandatory because of possible recurrent bleeding. Appropriate and expeditious management of true PDA aneurysms should help reduce the mortality rate.  (+info)

Surgical treatment of internal carotid artery anterior wall aneurysm with extravasation during angiography--case report. (7/956)

A 54-year-old female presented subarachnoid hemorrhage from an aneurysm arising from the anterior (dorsal) wall of the internal carotid artery (ICA). During four-vessel angiography, an extravasated saccular pooling of contrast medium emerged in the suprasellar area unrelated to any arterial branch. The saccular pooling was visualized in the arterial phase and cleared in the venophase during every contrast medium injection. We suspected that the extravasated pooling was surrounded by hard clot but communicated with the artery. Direct surgery was performed but major premature bleeding occurred during the microsurgical procedure. After temporary clipping, an opening of the anterior (dorsal) wall of the ICA was found without apparent aneurysm wall. The vessel wall was sutured with nylon thread. The total occlusion time of the ICA was about 50 minutes. Follow-up angiography demonstrated good patency of the ICA. About 2 years after the operation, the patient was able to walk with a stick and to communicate freely through speech, although left hemiparesis and left homonymous hemianopsia persisted. The outcome suggests our treatment strategy was not optimal, but suture of the ICA wall is one of the therapeutic choices when premature rupture occurs in the operation.  (+info)

Evaluation of cerebral aneurysms with high-resolution MR angiography using a section-interpolation technique: correlation with digital subtraction angiography. (8/956)

BACKGROUND AND PURPOSE: The objective was to evaluate the results of high-resolution, fast-speed, section-interpolation MR angiography and digital subtraction angiography (DSA), thereby examining the potential use of a primary noninvasive screening test for intracranial aneurysms. METHODS: The images were obtained in 39 cerebral aneurysmal lesions from 30 patients with a time-of-flight MR angiographic technique using a 1.5-T superconducting MR system. The total image volume was divided into four slabs, with 48 partitions each. To save time, only 24 phase-encoded steps were measured and interpolated to 48. The parameters used included 30/6.4 (TR/TE), a flip angle of 25 degrees , a 160x512 matrix, a field of view of 150x200, 7 minutes 42 seconds of scan time, an effective thickness of 0.7 mm, and an entire thickness of 102.2 mm. Maximum intensity projection was used for the image analysis, and a multiplanar reconstruction technique was used for patients with intracranial aneurysms. RESULTS: Among 39 intracranial aneurysmal lesions in 30 patients, 21 were ruptured and 18 were unruptured. Twelve lesions were less than 2 mm in size, 12 were 3 to 5 mm, 12 were 6 to 9 mm, and three were larger than 10 mm. At initial examinations, 38 of 39 aneurysmal lesions were detected by both MR angiography and DSA, with 97% sensitivity. In confirming aneurysms in neck and parent vessels, multiplanar reconstruction was successful in detecting all 39 aneurysms, whereas MR angiography was successful in detecting 27 (69%) and DSA was successful in detecting 32 (82%) of the lesions. CONCLUSION: High-resolution MR angiography with a section-interpolation technique showed equal results to those of DSA for the detection of intracranial aneurysms and may be used as a primary noninvasive screening test. In the evaluation of aneurysms in neck and parent vessels, the concurrent use of MR angiography and multiplanar reconstruction was far superior to the use of either MR angiography or DSA alone.  (+info)

Details of the image Segmental arterial mediolysis with gastroduodenal artery aneurysm Modality: DSA (angiography) (Celiac axis)
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TY - JOUR. T1 - Distal anterior inferior cerebellar artery aneurysms. T2 - Report of four cases. AU - Zager, Eric L.. AU - Shaver, Ellen G.. AU - Hurst, Robert W.. AU - Flamm, Eugene S.. PY - 2002/9. Y1 - 2002/9. N2 - Aneurysms of the distal anterior inferior cerebellar artery (AICA) are rare; fewer than 100 cases have been reported. The authors detail their experience with four cases and present endovascular as well as microsurgical management options. The medical records and neuroimaging studies obtained in four patients who were treated at a single institution were reviewed. Clinical presentations, neuroimaging and intraoperative findings, and clinical outcomes were analyzed. There were three men and one woman; their mean age was 43 years. Two patients presented with acute subarachnoid hemorrhage (SAH), and two presented with ataxia and vertigo (one with tinnitus, the other with hearing loss). Angiographic studies demonstrated aneurysms of the distal segment of the AICA. In one patient with ...
Objectives: To determine under what circumstances repair of unruptured intracranial aneurysms may be beneficial. Methods: A life expectancy analysis of patients with unruptured aneurysms with and without repair based on prospective data from the International Study of Unruptured Intracranial Aneurysms (ISUIA). Results: Life years are lost at all ages by repairing anterior circulation aneurysms under 7 mm in diameter in patients with no history of a subarachnoid haemorrhage from another aneurysm (incidental). For all other aneurysms the number of life years saved by repair is dependent on the patients age at the time when repair is undertaken. Between 2 and 40 years are saved by repairing aneurysms in patients aged 20 years. These benefits fall to 0 when remaining life expectancy falls below 15-35 years, corresponding to the age range of 45-70 years. Conclusions: Repair of unruptured aneurysms benefits patients harbouring them by improving life expectancy except in certain circumstances. The ...
TY - JOUR. T1 - Management of anterior inferior cerebellar artery aneurysms. T2 - Endovascular treatment and clinical outcome. AU - Suh, S. H.. AU - Kim, D. J.. AU - Kim, D. I.. AU - Kim, Byungmoon. AU - Chung, T. S.. AU - Hong, C. K.. AU - Jung, J. Y.. PY - 2011/1/1. Y1 - 2011/1/1. N2 - BACKGROUND AND PURPOSE: AICA aneurysms are rare and a challenge to treat surgically. We present our experience of the angiographic results and the clinical outcomes for 9 AICA aneurysms treated by EVT. MATERIALS AND METHODS: Between 1997 and 2009, EVT was attempted for 9 AICA aneurysms. Six patients presented with SAH, and 3 aneurysms were found incidentally. The location of the aneurysms was the proximal AICA in 7 and the distal AICA in 2. Five aneurysms originated from an AICA-PICA variant. Clinical outcomes and procedural complications were evaluated, and angiography was performed 6, 12, and 24 months after embolization to confirm recanalization of the coiled aneurysm. RESULTS: EVT was technically successful ...
Background To compare the effects of endovascular coiling and neurosurgical clipping in patients with unruptured intracranial aneurysm.
TY - JOUR. T1 - Commentary. T2 - Retrosigmoid clip anterior inferior cerebellar artery aneurysm: 2-dimensional operative video. AU - Eichberg, Daniel G.. AU - Komotar, Ricardo J.. AU - Sur, Samir. PY - 2020/5/1. Y1 - 2020/5/1. UR - http://www.scopus.com/inward/record.url?scp=85083545308&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=85083545308&partnerID=8YFLogxK. U2 - 10.1093/ons/opaa022. DO - 10.1093/ons/opaa022. M3 - Comment/debate. C2 - 32022869. AN - SCOPUS:85083545308. VL - 18. SP - E181-E182. JO - Operative Neurosurgery. JF - Operative Neurosurgery. SN - 2332-4252. IS - 5. ER - ...
SUZUKI, M.T.M. et al. De novo basilar tip aneurysm: Case report and literature review. Neurocirugía [online]. 2011, vol.22, n.3, pp.251-254. ISSN 1130-1473.. The de novo aneurysms are the formation of new aneurysms in a location previously observed to be normal by a cerebral angiography or direct microsurgical exploration. In this report, we present a review of the theme and describe a case of a ruptured de novo basilar tip aneurysm in a patient previously treated with carotid occlusion for a giant intracavernous aneurysm and microsurgical clipping of contralateral posterior communicating artery aneurysm.. Keywords : Basilar artery; De novo aneurysm; Subarachnoid hemorrhage. ...
Most unruptured cerebral aneurysms can be safely and durably treated using either microsurgical or endovascular techniques. The technical feasibility
Results From December 1996 to August 2012, 281 patients underwent 331 attempted endovascular procedures for treatment of an MCA aneurysm. Of these, 326 procedures were completed (5 attempted and failed). 217 procedures used balloon assistance. 85 were primary coilings. 4 were with the Pipeline device. 25 were with stent assistance. 17 were retreatments. 92 were for ruptured aneurysms. Mean aneurysm size was 6.6 mm.. The rate of intraprocedural aneurysm rupture or vessel perforation was 2.7% (9 of 331). 2 resulted in disabling strokes (mRS,2 at discharge) in patients with unruptured aneurysms, comprising the only patients with new disabling strokes with unruptured aneurysms in the entire cohort (0.6%, 2 of 331).. The rate of intraprocedural thromboembolic events was 13.9% (46 of 331), mostly in patients with acute subarachnoid haemorrhage (SAH, p,0.0001). Of these, 10 were symptomatic (3.0%); 9 of the 10 had SAH. Of the 10, 3 were transient ischaemic attacks (TIA) and 7 were strokes in the ...
To the Editor:. We read with interest the results of a large series of patients with intracranial aneurysms treated with stent-assisted coiling.1 A series of 216 patients with aneurysms (181 unruptured and 35 ruptured) were treated with this technique. Direct procedure-related mortality occurred in 10 of 216 (4.6%) and procedure-related permanent neurological deficit occurred in 16 of 216 (7.4%). In other words, 12% of patients either died or had permanent neurological deficit as a direct consequence of the treatment. This is an alarmingly high rate of serious complications, especially in a population harboring mostly unruptured aneurysms (with benign natural history) located on sites that are easily accessible for surgery. We cannot think of an unruptured aneurysm with a cumulative risk that outweighs this high complication rate. It is difficult to conceive that future patients with incidentally found unruptured aneurysms will consent to a proposed therapy with an almost 1-in-8 chance of death ...
I ve had 2 unruptured aneurysms monitored for about 20 years with CTA s. I m going to have an MRA, but on a 1.5 Tesla rather than the 3T MRI because of the type of aneurysm clip I have. I m concerned that it will not detect the very small aneurysms.
We appreciate the interest of Dr Bergui and colleagues in our article on safe surgery for unruptured intracranial aneurysms in patients without restrictions in postoperative lifestyle.1 Dr Bergui focuses our attention on the exclusion of two patients with surgical complications. We certainly agree with them that clinical symptoms may or may not appear, depending on the extent of the brain damage, the region of the brain damage involved, and the sensitivity of the tests applied. However, we maintain our conclusions for the following reasons.. The cognitive tests we applied can detect general intellectual function, visuospatial construction, and memory function. Although this test battery is not perfect, it can detect cognitive dysfunction if trans-Sylvian surgery affected the frontal and/or temporal lobes of the patient.. I do not agree that even uncomplicated surgery always requires invasive maneuvers in the brain, resulting in unavoidable brain damage. Surgery for unruptured intracranial ...
Objectives: The aim of this study was to compare the pre- and postoperative health-related quality-of-life (QOL) and psychological state of patients with asymptomatic unruptured intracranial aneurysms (ICAs) who underwent elective surgery. Methods: Of 67 patients who underwent neck clipping of ICAs, we assessed the QOL of 61 patients using Short Form-36 (SF-36); their psychological state was rated on the Hospital Anxiety and Depression Scale (HADS) before, 3 months, and 1- and 3 years after treatment. Results: The preoperative mean scores for each of the 8 SF-36 domains except bodily pain were significantly lower in the study- than the reference population. Fourteen patients (20.9%) experienced surgical complications defined as neurological deterioration and/or abnormal CT findings within 30 days of the operation. Despite some complications, the QOL of all operated patients returned to the mean level of the reference population 3 years post-treatment. At 3 months after surgery, the scores for ...
This study showed that coiling is associated with less harm than clipping in terms of disability measured by mRS and GOS, neurological and cardiac complications, but all of the studies included were observational. It is difficult to randomise controlled trials of surgical intervention in terms of such factors; consequently, observational studies may be the best available evidence. This is the first comprehensive systematic review and meta-analysis comparing clipping and coiling in patients with UIA. King et al. [11] and Raaymakers et al. [12] found mortality rates of 1.0% and 2.6% and morbidity rates of 4.1% and 10.9%, respectively, in meta-analyses of the outcome of clipping for UIA. Ontario [13] performed a systematic review on the outcome of clipping for intracranial aneurysms including UIA. These previous studies were systematic reviews of only a single intervention and did not compare interventions with one another. Therefore, the present study is meaningful despite some ...
Deregulation of miRNA-21 expression has been reported to be associated with vascular smooth muscle behavior and cytoskeletal stability. This study is aimed to investigate the density of serum miRNA-21 in patients with different phases of intracranial aneurysms (IAs) and explore its warning function for IA rupture. A total of 16 in 200 IA patients were selected and categorized into 4 groups based on the phase of IA. Microarray study was carried out using serum miRNA and differentially expressed miRNAs were identified. Another 24 samples from a cohort of 360 patients were added and real-time polymerase chain reaction (RT-PCR) was performed on expanded sample size (n = 40) for miRNA-21 validation. Potential gene targets of miRNA-21 were screened out from Gene Ontology (GO) database and literatures. Microarray study identified 77 miRNAs with significantly different expression levels between experimental groups and the control group. RT-PCR assays validated significant downregulation of miRNA-21 in
Significant advances have been made in endovascular techniques for the treatment of intracranial aneurysms (2-4, 11-13), resulting in wide acceptance of GDCs for treatment of saccular intracranial aneurysms. The safety and efficacy of this technique have been well documented (2, 5). Treatment-related complication rates for ruptured and unruptured aneurysms have been reported to be similar or less than those in surgical series. Morbidity figures vary between 3.7% and 10.6%, with mortality between 1% and 2.3% (14, 15).. Complications during GDC procedures have several possible causes. As an angiography-based procedure, GDC therapy shares the risks of routine diagnostic cerebral angiography. Hemostatic control at the puncture site, large vessel dissection, contrast reactions, renal failure, and infection probably occur at rates similar to diagnostic cerebral angiography and account for only a minority of the morbidity and mortality rates. The mechanical forces of navigating a microcatheter through ...
suggested by others 5, 15, 19 in multiple-aneurysm patients who had only one aneurysm treated. In addition, the percentage of the population suffering a rupture of an intact aneurysm is comparable to that found by Wiebers, et al. , 29 who studied the natural history of unruptured intracranial aneurysms in 65 patients followed for an average of 8.2 years. Eight of their 65 patients (12.3%) suffered a subsequent hemorrhage during the first decade after the initial bleed. The present study has an almost identical follow-up period (8.1 years), during which at least three. ...
Gemayel G, Verdon G, Murith N, Huber C. Rescue of a Failing Endovascular Infrarenal Aortic Repair Using an Off-The-Shelf Branched Endograft. Ann Vasc Surg. 2017 Jul 21. Gemayel G et al. Traitement des anévrismes aortiques à lère endovasculaire. Rev Med Suisse 2017; 13: 519-23. Gemayel G, A Rare Cause of Pulmonary Embolism: Popliteal Vein Aneurysm. Eur J Vasc Endovasc Surg. 2016 Jun;51(6):809. Gemayel G, Mootoosamy P, Murith N, Kalangos A. Embolization of a large rapidly growing aortic pseudo-aneurysm not amenable to open or endovascular repair. Ann Vasc Surg. 2016 May;33:230.e15-8. Myers PO, Gemayel G, Mugnai D, Murith N, Kalangos A. Endovascular exclusion of aortoesophageal fistula after coarctation extraanatomical bypass. Ann Thorac Surg.. 2014 Jul;98(1):314-6. Gemayel G, Murith N, Kalangos A. Off-label use of a reversed flared endurant iliac limb stengraft for the management of a life-threatening internal iliac artery aneurysm rupture. Vascular. 2014 Oct;22(5):381-4. Gariani K, Righini M, ...
The string of beads sign is the description typically given to the appearance of the renal artery in fibromuscular dysplasia (FMD) but may also be used to describe the appearance of splanchnic arteries in segmental arterial mediolysis (SAM). It r...
In this sample of patients treated in the United States from 2001 to 2008, we have found that endovascular coiling of unruptured intracranial aneurysms was associated with significantly less morbidity and mortality than surgical clipping. While we cannot know for any individual case in our study the relative merits of endovascular therapy versus open surgery versus observation, the results from the NIS data base suggest that patients treated in the United States with surgery generally face a significantly higher risk of adverse outcome than patients treated with endovascular therapy. This trend does not necessarily imply that all the patients treated with surgery should have been offered endovascular therapy, because for many of these patients, endovascular therapy may have been an inadequate option. While some have recommended that in treating unruptured cerebral aneurysms, "microsurgical clipping rather than endovascular coiling should be the first treatment choice in low-risk cases,"4 our ...
Endovascular techniques have evolved as an effective treatment for intracranial BBAs and in some studies they were associated with high rates of complete occlusion and good mid- to long-term neurological outcomes.. Due to its characteristics, simple coiling of ruptured BBA is almost impossible and stent-assisted coiling (SAC) is needed; moreover, stent endothelialization can cover the BBA neck. This technique facilitates placement of coils, but is associated with low occlusion rates: 33% initially and around 70% at mid- to long-term follow-up. Furthermore, SAC may be difficult and have potential associated risks, including aneurysm neck disruption or distal coil migration, microcatheter or microwire perforation and the only advantage of coil embolization of BBAs is that antiplatelet therapy is not needed. Some Authors suggest a delayed treatment, because in late stage BBAs may be covered by a thick clot, which improves their stability. In contrast a delayed treatment could be fatal due to the ...
Background and Purpose-The purpose of the present study was to calculate the prevalence and relative risk of unruptured incidental intracranial aneurysms IAs among families with IA cases compared with the general population in one geographically defined area in East Finland and to identify the risk group that could benefit most from screening...
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Key point: The widespread use of neurovascular imaging has increased the amount of intracranial aneurysms eccidentally detected. Although the lifetime risk of aneurysmal rupture in many cases is relatively small (approximately 1% per year), rupture can results in permanent neurological deficits or death, the reason why often patients may desire the treatment of unruptured aneurysms Read more about An "old" meta-analysis: coiling versus microsurgical clipping in the treatment of unruptured MCA aneurysms[…]. ...
Although treatment of a ruptured aneurysm is accepted as an emergency, indication for treatment of unruptured intracranial aneurysms (IAs) is still being discussed.
Ive been diagnosed with two mirror aneurysms with sacs in opthalmic artery. Have been given advise for clipping or flow diverter. Im looking for others who have or have had treated such aneurysm. Thanks to get In touch!
Objective: To evaluate the outcome and length of hospitalization of Endovascular Coiling and Surgical Clipping methods in the treatment of intracranial aneurysms in patie..
Disease in human physiology is often related to cardiovascular mechanics. Impressively, strokes are one of the leading causes of death in developed countries, and they might occur as a result of an aneurysm rupture, which is a sudden event in the majority of cases. On the basis of several autopsy and angiography series, it is estimated that 0.4-6 % of the general population harbors one or more intracranial aneurysms, and on average the incidence of an aneurysmal rupture is of 10 per 100,000 population per year, with tendency to increase in patients with multiple aneurysms [14, 20]. ...
Overall, 7 unruptured cerebral aneurysm and 10 STA specimens were collected. Several differentially expressed genes were identified in aneurysm tissue, with MMP-13 (fold change 7.21) and various collagen genes (COL1A1, COL5A1, COL5A2) being among the most upregulated. In addition, multiple miRNAs were significantly differentially expressed, with miR-21 (fold change 16.97) being the most upregulated, and miR-143-5p (fold change −11.14) being the most downregulated. From these, miR-21, miR-143, and miR-145 had several significantly anticorrelated target genes in the cohort that are associated with smooth muscle cell function, extracellular matrix remodeling, inflammation signaling, and lipid accumulation. All these processes are crucial to the pathophysiology of cerebral aneurysms. ...
Unruptured saccular intracranial aneurysm (sIA) is a relatively common disease (2%-3% prevalence).1 Asymptomatic unruptured sIAs are diagnosed increasingly frequently due to improved availability of magnetic resonance imaging (MRI) scans. Although sIAs may rupture causing devastating hemorrhage with mortality of 30% to 50%,2 most sIAs never rupture.3 The pathobiology of sIA formation and rupture need to be elucidated in…
A leading cosmetic surgery company which carried out a large proportion of PIP implant operations on British women insisted today that its
Jauffrais, T. , Herrenknecht, C. , Séchet, V. , Sibat, V. , Tillmann, U. , Krock, B. , Kilkoyne, J. , Miles, C. O. , McCarron, P. , Amzil, Z. and Hess, P. (2012 ...
TY - JOUR. T1 - Common Data Elements for Unruptured Intracranial Aneurysms and Subarachnoid Hemorrhage Clinical Research. T2 - A National Institute for Neurological Disorders and Stroke and National Library of Medicine Project. AU - the Unruptured Intracranial Aneurysms and SAH CDE Project Investigators. AU - Suarez, Jose I.. AU - Sheikh, Muniza K.. AU - Macdonald, R. Loch. AU - Amin-Hanjani, Sepideh. AU - Brown, Robert D.. AU - de Oliveira Manoel, Airton Leonardo. AU - Derdeyn, Colin P.. AU - Etminan, Nima. AU - Keller, Emanuela. AU - Leroux, Peter D.. AU - Mayer, Stephan A.. AU - Morita, Akio. AU - Rinkel, Gabriel. AU - Rufennacht, Daniel. AU - Stienen, Martin N.. AU - Torner, James. AU - Vergouwen, Mervyn D.I.. AU - Wong, George K.C.. AU - Mayer, Stephan. AU - Bijlenga, Philippe. AU - Ko, Nerissa. AU - McDougall, Cameron G.. AU - Mocco, J.. AU - Murayama, Yuuichi. AU - Werner, Marieke J.H.. AU - Broderick, Joseph. AU - Dhar, Raj. AU - Jauch, Edward C.. AU - Kirkpatrick, Peter J.. AU - Martin, ...
Clinical presentation A middle-aged patient was referred for treatment of a bilobed saccular aneurysm identified on a CT angiogram performed for a subarachnoid hemorrhage which occurred 20 days prior to presentation. A diagnostic angiogram showed a bilobed wide-necked saccular aneurysm at the AICA origin with the AICA arising from the dome of the aneurysm and also supplying the territory of the posterior inferior cerebellar artery. The therapeutic procedure involved trans-aneurysmal cannulation of the AICA with the microcatheter left in situ. Another microcatheter was maneuvered into the larger dome of the aneurysm. A stent was then deployed in the basilar artery, jailing the previous microcatheter in the aneurysm. Helical Guglielmi detachable coils were deployed in the aneurysm resulting in complete occlusion of the aneurysm with preservation of the AICA.. ...
ISAT 2005": Molyneux AJ, Kerr RS, Yu LM, Clarke M, Sneade M, Yarnold JA, Sandercock P; International Subarachnoid Aneurysm Trial (ISAT) Collaborative Group. International subarachnoid aneurysm trial (ISAT) of neurosurgical clipping versus endovascular coiling in 2143 patients with ruptured intracranial aneurysms: a randomised comparison of effects on survival, dependency, seizures, rebleeding, subgroups, and aneurysm occlusion. Lancet 2005 Sep 3-9;366(9488):809-17 ...
OBJECT: Endovascular treatment of very small aneurysms poses a significant technical challenge for endovascular therapists. The authors review their experience with a series of patients who had intracranial aneurysms smaller than 3 mm in diameter. METHODS: Between 1995 and 2006, 97 very small aneurysms (defined for purposes of this study as | 3 mm in diameter) were diagnosed in 94 patients who were subsequently referred for endovascular treatment. All patients presented after subarachnoid hemorrhage, which was attributed to the very small aneurysms in 85 patients. The authors reviewed the endovascular treatment, the clinical and angiographic results of the embolization, and the complications. RESULTS: Five (5.2%) of the 97 endovascular procedures failed, and these patients underwent craniotomy and clip ligation. Of the 92 aneurysms successfully treated by coil embolization, 64 (69.6%) were completely occluded and 28 (30.4%) showed minor residual filling or neck remnants on the immediate postembolization
We discuss a case with combined vestibulocochlear and facial neuropathy mimicking a less urgent peripheral vestibular pattern of acute vestibular syndrome (AVS). With initial magnetic resonance imaging read as normal, the patient was treated for vestibular neuropathy until headaches worsened and a diagnosis of subarachnoid hemorrhage was made. On conventional angiography, a ruptured distal right-sided aneurysm of the anterior inferior cerebellar artery was diagnosed and coiled. Whereas acute vestibular loss usually points to a benign peripheral cause of AVS, combined neuropathy of the vestibulocochlear and the facial nerve requires immediate neuroimaging focusing on the cerebellopontine angle. Imaging should be assessed jointly by neuroradiologists and the clinicians in charge to take the clinical context into account. ...
TY - JOUR. T1 - External Validation of the ELAPSS Score for Prediction of Unruptured Intracranial Aneurysm Growth Risk. AU - Kammen, Mayte Sánchez van. AU - Greving, Jacoba P. AU - Kuroda, Satoshi. AU - Kashiwazaki, Daina. AU - Morita, Akio. AU - Shiokawa, Yoshiaki. AU - Kimura, Toshikazu. AU - Cognard, Christophe. AU - Januel, Anne C. AU - Lindgren, Antti. AU - Koivisto, Timo. AU - Jääskeläinen, Juha E. AU - Ronkainen, Antti. AU - Pyysalo, Liisa. AU - Öhman, Juha. AU - Rahi, Melissa. AU - Kuhmonen, Johanna. AU - Rinne, Jaakko. AU - Leemans, Eva L. AU - Majoie, Charles B. AU - Vandertop, W Peter. AU - Verbaan, Dagmar. AU - Roos, Yvo B W E M. AU - Berg, René van den. AU - Boogaarts, Hieronymus D. AU - Moudrous, Walid. AU - Wijngaard, Ido R van den. AU - Hove, Laura Ten. AU - Teo, Mario. AU - George, Edward J St. AU - Hackenberg, Katharina A M. AU - Abdulazim, Amr. AU - Etminan, Nima. AU - Rinkel, Gabriël J E. AU - Vergouwen, Mervyn D I. PY - 2019/9/1. Y1 - 2019/9/1. N2 - Background and ...
TY - JOUR. T1 - Delayed aneurysm regrowth and recanalization after Guglielmi detachable coil treatment. Case report. AU - Mericle, Robert A.. AU - Wakhloo, Ajay K.. AU - Lopes, Demetrius K.. AU - Lanzino, Giuseppe. AU - Guterman, Lee R.. AU - Hopkins, L. Nelson. PY - 1998/7. Y1 - 1998/7. N2 - Guglielmi detachable coil (GDC) treatment for complicated cerebral aneurysms is an attractive option that has become widely accepted in recent years. This technique is usually considered only if the patient harbors an aneurysm that is not a good candidate for surgical clipping. However, the definition of surgical candidate varies among institutions, and many patients worldwide are being treated with GDCs as primary therapy. Although most centers currently perform follow-up angiography at 6 months to 1 year, others do not routinely perform it after an initially good result. The authors present a case that indicates longer follow up may be necessary and illustrates some of the pitfalls of GDC treatment. ...
A prospective study was designed to evaluate clinical outcome in a series of 100 consecutively treated patients who underwent endovascular embolization of 104 intracranial aneurysms using Guglielmi detachable coils (GDCs). Midterm clinical outcome (2-6 years, average 3.5 years) was obtained for 94 p …
In recent years the endovascular treatment of intracranial aneurysms (coiling) has progressively gained recognition, particularly after the publication of the International Subarachnoid Aneurysm Trial (ISAT) in 2002. Despite the fact that in ISAT mid
Results The aneurysm growth probability was 2.6±0.1% per year. The rate of unexpected aneurysm rupture before treatment was 0.24% per year (95% CI 0.17% to 2.40%). The calculated rate of aneurysm rupture after growth was 6.3% per aneurysm-year (95% CI 1% to 22%). Aneurysms located in the posterior circulation and aneurysms with lobulation were more likely to grow. Females or patients suffering hypertension were more likely to have an aneurysm growing. The probability of aneurysms growth increased with the size of the dome and was proportional to the number of aneurysms diagnosed in a patient. ...
As previously shown, many factors associated with aneurysm rupture, like female sex, smoking, hypertension, larger aneurysm size, posterior circulation location and aneurysm shape, were also associated with aneurysm growth. However, the degree of heterogeneity in the effect estimates was moderate to substantial. The presence of multiple UIAs, which has not been readily identified as a factor associated with aneurysmal rupture, was shown to be significantly associated with aneurysm growth, raising the possibility that patients with multiple aneurysms might have a possibly connective-tissue based predilection towards more rapid growth than patients with single aneurysms, although it is important to note that this signal was also confounded by quite heterogeneous effect estimates. In contrast to their well-established association with aneurysmal rupture, family history of SAH and previous SAH were not significant factors for aneurysmal growth. Interestingly, UIA cohorts from Japan (where rates of ...
Many unruptured cerebral aneurysms can now be identified with CTA or MRA, without the more invasive catheter angiography. However, catheter angiography better diagnoses SAH. Angiography of any type is not perfect and can fail to identify small aneurysms of less than 3 mm.. Cerebral aneurysms may be treated surgically to reduce the risk of rupture, rebleeding, or brain damage from pressure the aneurysm places on brain tissue. Surgery to place a metal clip on the neck of an aneurysm that connects it to a parent vessel has been the standard treatment in the past. This procedure is major brain surgery and requires a craniotomy. A piece of the skull (skull flap) is sawed under general anesthesia and laid back for entry into the brain. This surgery has risks and the surgical risks for small aneurysms considerably exceed the risks of conservative (non-surgical) treatment.. A second surgical option has been the use of detachable coils of various sizes and shapes, which can be inserted without opening ...
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Hemodynamic stress toward the wall of intracranial artery with associated genuine defects of wall remodeling capacity is one of many hypotheses of subarachnoid aneurysm development. In addition, hemodynamic stress toward an aneurysm wall may play a very significant role for the rupture of an aneurysm creating acute Subarachnoid hemorrhage. We think the Wall Shear Stress (WSS) measurement toward an intracranial arterial wall and intracranial aneurysmal wall may provide valuable information for understanding of intracranial aneurysm development as well as predicting future morphological changes of aneurysm and possibly risk of future rupture. This study is significant especially in the management of unruptured subarachnoid arterial aneurysm patients and identifying patients who have higher rupture risks for active treatments such as surgical clipping or coiling to prevent unnecessary but potentially risky procedures.. Gadolinium MR Angiography with NOVA® Software will be used to measure the ...
BACKGROUND AND PURPOSE: Thrombus formation during endovascular embolization of intracranial aneurysms occurs in 2.9%-6% of patients. Use of IIb/IIIA inhibitors such as abciximab or eptifibatide intravenously has been reported in management of this complication. Because the intra-arterial infusion of IIb/IIIA inhibitors may require lower doses to achieve thrombolysis, it may reduce the risk of haemorrhage. Therefore, we retrospectively analyze our database and review the literature. METHODS: This is a retrospective analysis of a prospectively acquired database of patients with ruptured or unruptured aneurysm treated intra-arterially for thrombus formation during endovascular coil embolization between July 2005 and August 2008. Patient demographics, aneurysmal characteristics, procedural, clinical outcome and complications were recorded. RESULTS: From July 2005 to August 2008, out of 184 patients who underwent coil embolization, 19 patients (15 smokers, 14 female, mean age 52) developed intraprocedural
Dear Colleagues, I have a physician who is desperate to read this article ASAP, because his son was just diagnosed with the condition. The full text is not available in our subscribed edition of MD Consult. Wiebers DO. Unruptured intracranial aneurysms: natural history and clinical management. Update on the international study of unruptured intracranial aneurysms. Neuroimaging Clin N Am. 2006 Aug;16(3):383-90, vii. PMID: 16935706 [PubMed - in process] Please contact me to avoid duplicates. PDF or fax preferred, but he is so anxious, Im pretty sure he would accept it scribbled on a napkin. Thank you in advance. Valerie ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Valerie G. Rankow, MLS Medical Librarian Brookhaven Memorial Hospital Medical Center Patchogue, NY 11772 Tel. 631-654-7774 Fax 631-447-3723 [log in to unmask] ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -------------------------------------------------------------------- mail2web - Check your email from the web at http://mail2web.com/ ...
When imaging patients for intracranial aneurysm, the goals are: (1) to assess the contour of the intracranial arteries, particularly in he regions of the ACOM (anterior communicating artery), PCOM (posterior communicating artery), ICA (internal carotid artery) bifurcation, MCA (middle cerebral artery) trifurcation, basilar tip, and PICA (posterior inferior cerebellar artery); (2) to assess the anatomy of the Circle of Willis and direction of flow, and; (3) to determine if there is evidence of a recent subarachnoid bleed
Ruptured splenic artery aneurysm - a case report from Saudi Arabia. Splenic artery - medterms.com Gray's s278 - "The Spleen" ... Play media Splenic artery aneurysms are rare[1], but still the third most common abdominal aneurysm, after aneurysms of the ... PMID 12089631 ^ Jamsheer NS, Malik M (2001). "Ruptured splenic artery aneurysm". Ann Saudi Med. 21(5-6): pp. 340-341. Accessed ... abdominal aorta and iliac arteries.[2][3] They may occur in pregnant women in the third trimester and rupture carries a ...
Alexander, M. P.; Freedman, M (1984). "Amnesia after anterior communicating artery aneurysm rupture". Neurology. 34 (6): 752-57 ... Most known cases of confabulation are symptomatic of brain damage or dementias, such as aneurysm, Alzheimer's disease, or ... rupture of the anterior or posterior communicating artery, subarachnoid hemorrhage, and encephalitis are also possible causes ... "Memory disturbances following anterior communicating artery rupture". Annals of Neurology. 31 (5): 473-80. doi:10.1002/ana. ...
Qi Qian; Kianoush B. Kashani; Dylan V. Miller (10 September 2009). "Ruptured abdominal aortic aneurysm related to IgG4 ... Satomi Kasashima; Yoh Zen (26 January 2011). "IgG4-related Inflammatory Abdominal Aortic Aneurysm, Spectrum of IgG4-related ... "Carotid aneurism with acute dissection: an unusual case of IgG4-related diseases". Cardiovascular Pathology. 25 (1): 59-62. doi ...
"Ischemic colitis following repair of ruptured abdominal aortic aneurysm". Archives of Surgery. 120 (12): 1368-70. doi:10.1001/ ... Use during Aortic Aneurysm repair detected when colon oxygen levels fell below sustainable levels, allowing real-time repair. ... In addition, ischemic colitis is a well-recognized complication of abdominal aortic aneurysm repair, when the origin of the ... 2008). "Use of T-Stat to predict colonic ischemia during and after endovascular aneurysm repair". J Vasc Surg. 47 (3): 632-634 ...
Heart failure may occur after rupture of ventricular aneurysm. These can form after myocardial infarction. If it ruptures on ... If it ruptures on the intraventricular septum, it can create a ventricular septal defect. Other causes of cardiac tamponade may ...
Bleeding may occur due to a ruptured brain aneurysm. Diagnosis is typically with medical imaging such as a CT scan or magnetic ... while hemorrhagic strokes result from the rupture of a blood vessel or an abnormal vascular structure. About 87% of strokes are ... cerebral arteriovenous malformation and an intracranial aneurysm, which can cause intraparenchymal or subarachnoid hemorrhage.[ ...
He died in 1993 of a ruptured aortic aneurysm. Normandin, P G (1965). Canadian Parliamentary Guide, 1965. "Must Resign Govt. ...
"Treatment of ruptured lenticulostriate artery aneurysms." J Neurosurg. 2008 Jul. PMID 18590430 Eloy JA, Carai A, Patel AB, ... "Hemodynamics of Giant Intracranial Aneurysms." In: Awad I and Barrow D, eds, Giant Intracranial Aneurysms. American Association ... "Reporting standards for endovascular repair of saccular intracranial cerebral aneurysms." J Vasc Interv Radiol. 2009 Jul. PMID ... "Guidelines for the management of unruptured intracranial aneurysms. A statement for healthcare professionals from a special ...
For example, ruptured aortic aneurysm is fatal in most cases; the survival rate for a ruptured aortic aneurysm is under 25%. ...
... died of a ruptured aneurysm on 14 August 2008, aged 84. His survivors included his brother, the ... "Papeete's Catholic archbishop emeritus dies at 84 of ruptured aneurysm". Tahitipresse. 2008-08-17. Archived from the original ... "Papeete's Catholic archbishop emeritus dies at 84 of ruptured aneurysm". Tahitipresse. Pacific Magazine. 2008-08-17. Archived ...
"Relative importance of aneurysm diameter and body size for predicting abdominal aortic aneurysm rupture in men and women." ... "Relative importance of aneurysm diameter and body size for predicting abdominal aortic aneurysm rupture in men and women". J ... 2012). "Endovascular vs open repair for ruptured abdominal aortic aneurysm". Journal of Vascular Surgery. 56 (1): 15-20. doi: ... "Comparative effectiveness of endovascular versus open repair of ruptured abdominal aortic aneurysm in the Medicare population ...
"Papeete's Catholic archbishop emeritus dies at 84 of ruptured aneurysm". Tahitipresse. 2008-08-17. Retrieved 2008-08-26. [dead ...
It's also found that E-selectin expression increased in human ruptured cerebral aneurysm tissues. E-selectin might be an ... "E-selectin expression increased in human ruptured cerebral aneurysm tissues". The Canadian Journal of Neurological Sciences. Le ... important factor involved in the process of cerebral aneurysm formation and rupture, by promoting inflammation and weakening ...
He died in London, after surgery for a ruptured aneurysm. Harry Wallop "Anthony Howard dies", Daily Telegraph (blog), 19 ...
He died on 5 August 2008 of a ruptured aortic aneurysm. He lived with his wife Christina Bartlett until his death. They had 4 ...
He died of a ruptured aneurysm at the age of 45. Armand Lévy described many mineral species, such as babingtonite, beudantite, ...
Krull died on July 27, 2013, of a ruptured aortic aneurysm. She was interred at Mount Sinai Memorial Park Cemetery in Los ...
Aneurysms are life-threatening because they can rupture. Identify dissection in the aorta or its major branches. Dissection ... Identify aneurysms in the aorta or in other major blood vessels. Aneurysms are diseased areas of a weakened blood vessel wall ... Identify a small aneurysm or arteriovenous malformation inside the brain that can be life-threatening. Detect atherosclerotic ...
... aneurysms are typically asymptomatic until rupture is immiment. AAA rupture can cause immediate death from exsanguination. ... However, the scientist was also suffering from an abdominal aortic aneurysm (AAA). An aneurysm is a dilatation that occurs in a ... decreasing the risk of rupture. Nissen wrapped the aneurysm with cellophane and Einstein recovered from the surgery. Upon his ... Apple, R. W. (April 19, 1955). "Ruptured artery lethal". Daily Princetonian. Retrieved September 6, 2013. "Einstein waited too ...
"Aneurysm Inflow-Angle as a Discriminant for Rupture in Sidewall Cerebral Aneurysms". Morphometric and Computational Fluid ...
On 26 August 2014, Yonekura died of an abdominal aortic aneurysm rupture. He was 80. Zatoichi Meets Yojimbo (1970) Kanashimi no ...
Two studies of ruptured abdominal aortic aneurysm (AAA) have been carried out. Both demonstrated the weekend effect. In 2012, ... "Effects of weekend admission on the outcomes and management of ruptured aortic aneurysms". J Vasc Surg. 60: 318-24. doi:10.1016 ... "Higher mortality in patients hospitalized for acute aortic rupture or dissection during weekends". J Vasc Surg. 55: 1247-54. ...
On 31 May 2012 Paul died suddenly after suffering a ruptured aneurysm. He is survived by his wife and two sons. The Lost Army ...
McKernan had serious health issues in 2003, after an abdominal aneurysm ruptured. After that time he was restricted by doctors ...
An aneurysm of a great vessel can rupture and cause sudden death. Grooters A (2003). "Pythiosis, lagenidiosis, and zygomycosis ...
This may be due to a variety of medical conditions such as an aneurysm that causes a hemorrhagic stroke, or an occlusion ... Problems during labor and delivery can include umbilical cord occlusion, torsion or prolapse, rupture of the placenta or uterus ... Aneurysm in a cerebral artery,. one cause of hypoxic anoxic injury (HAI). ...
A ruptured intracranial aneurysm causes intracranial bleeding and is considered very dangerous. ... A ruptured intracranial aneurysm causes intracranial bleeding and is considered very dangerous. ...
Background Coronary artery aneurysm can be defined as an abnormal dilatation of the coronaries. In recent years, the disease ... The aneurysm had ruptured superiorly at the left atrium, just below the left auricle. The site of perforation (0.5 × 0.5 cm) ... Ruptured aneurysm is a rare complication of CAA, besides thrombosis, embolization and ischaemia (Daneshvar et al. 2012). Once ... We, thus, reported a case of sudden death due to ruptured aneurysm of coronary artery in a 53-year-old male, who had no history ...
The most typical manifestation of rupture is abdominal or back pain with a pulsatile abdominal mass. However, the symptoms may ... Persons with AAAs that have ruptured may present in many ways. ... What are the symptoms of a ruptured abdominal aortic aneurysm ( ... The management of ruptured abdominal aortic aneurysms: screening for abdominal aortic aneurysm and incidence of rupture. J ... Ruptured abdominal aortic aneurysm: endovascular repair is feasible in 40% of patients. Eur J Vasc Endovasc Surg. 2003 Nov. 26( ...
Aneurysm. Intracranial Aneurysm. Aneurysm, Ruptured. Brain Diseases. Hemorrhage. Subarachnoid Hemorrhage. Rupture. Pathologic ... Barrow Ruptured Aneurysm Trial (BRAT). The safety and scientific validity of this study is the responsibility of the study ... Analysis of saccular aneurysms in the Barrow Ruptured Aneurysm Trial. J Neurosurg. 2018 Jan;128(1):120-125. doi: 10.3171/2016.9 ... Ruptured Cerebral Aneurysm Subarachnoid Hemorrhage (SAH) Procedure: coil embolization Procedure: clip occlusion ...
Ruptured abdominal aortic aneurysms (AAA) are so deadly, they kill 13,000 Americans every year. Minimally invasively ... Eventually, the aneurysm may rupture, causing rapid blood loss and potentially, death. If detected before it ruptures, an AAA ... Ruptured abdominal aortic aneurysms (AAA) are so deadly, they kill 13,000 Americans every year. Minimally invasively emergency ... Ruptured abdominal aortic aneurysms (AAA) are so deadly, they kill 13,000 Americans every year. Minimally invasively emergency ...
A ruptured aneurysm is a situation in which a swollen part of a blood vessel bursts, leading to a hemorrhage. The warning signs ... Burst aneurysms most commonly occur in the brain, aorta, and leg, though an aneurysm - and a rupture - can occur anywhere in ... An aneurysm is an artery wall that widens or balloons, thereby thinning out the blood vessel. A ruptured aneurysm occurs when ... A ruptured aneurysm in the brain will leak blood into the surrounding tissue. A burst cerebral aneurysm also often causes ...
Generally, aneurysms develop slowly and dont cause symptoms. When an aneurysm in the brain ruptures or leaks, it can cause a ... its called an aneurysm. For people with emphysema, the risk of that aneurysm rupturing is much higher than for those without ... AHA News: Emphysema May Raise Risk of Ruptured Aneurysms TUESDAY, March 19, 2019 (American Heart Association News) -- When a ... Of the more than 4,800 patients diagnosed with an aneurysm rupture, 433 cases occurred in those with emphysema. ...
... and rupture or stabilization may identify those hemodynamic features that lead to aneurysm instability and rupture. Modeling ... Detailed CFD analysis of the rupture point can further strengthen the association between hemodynamics and rupture. In this ... There is a need in the clinical community to identify those that are prone to rupture and would require preventive treatment. ... The neurosurgical approach during operation of IA allows direct visualization of the aneurysm sac and its sampling in many ...
Other aneurysms were principally treated by clipping. Aneurysms with a dome/neck ratio of less than 1.5, distorted aneurysms, ... Treatment selection for ruptured aneurysm and outcomes: clipping or coil embolization.. Tenjin H1, Takadou M, Ogawa T, Mandai A ... However, many ruptured aneurysms are hardly treatable by either clipping or coil embolization. Selection of either clipping or ... This study included 113 patients with ruptured intracranial saccular aneurysms measuring less than 10 mm. Selection criteria ...
In the trial, 96% of patients with unruptured aneurysms and 90% of patients with acutely ruptured aneurysms were alive and free ... Target aneurysm recurrence is defined as aneurysm recurrence evidenced by a clinically relevant event of aneurysm bleeding/ ... Landmark Stryker Trial Establishes Coiling as Safe and Effective Treatment for Ruptured and Unruptured Aneurysms. News provided ... Landmark Stryker Trial Establishes Coiling as Safe and Effective Treatment for Ruptured and Unruptured Aneurysms MAPS™ Trial ...
The management of ruptured abdominal aortic aneurysms: screening for abdominal aortic aneurysm and incidence of rupture. J ... Drugs & Diseases , Vascular Surgery , Abdominal Aortic Aneurysm Q&A What is the prehospital for a patient with a ruptured ... Ruptured abdominal aortic aneurysm: endovascular repair is feasible in 40% of patients. Eur J Vasc Endovasc Surg. 2003 Nov. 26( ... In vivo analysis of mechanical wall stress and abdominal aortic aneurysm rupture risk. J Vasc Surg. 2002 Sep. 36(3):589-97. [ ...
Peoria-area journalist had ruptured brain aneurysm. Sunday. Jul 29, 2012 at 12:01 AM Jul 29, 2012 at 4:22 PM ... Bartels, who was pronounced dead in his home early Friday morning, died of a ruptured brain aneurysm, Ingersoll said. ...
Consequently, small (,7mm) aneurysms have often been left untreated, even though such aneurysms have also been known to rupture ... The new study established that approximately one third of all aneurysms and up to one fourth of small aneurysms will rupture ... The risk of rupture is particularly high for female smokers with brain aneurysms of seven millimeters or more in diameter. What ... "This is not to say that aneurysms in non-smoking men never rupture, but that the risk is much lower than we previously thought ...
AHA: Can Statins Help Prevent Brain Aneurysms From Rupturing? By the American Heart Association THURSDAY, April 5, 2018 ( ... "We also knew how long before they had the aneurysm that they had taken the statin or if they were still on it when the rupture ... If an aneurysm expands quickly or ruptures, it can cause symptoms such as a sudden severe headache, stiff neck, dizziness, ... But for the 30,000 people each year in whom an aneurysm ruptures, causing blood to leak into the space around the brain, the ...
Treatment of ruptured intracranial aneurysms with the pipeline embolization device.. Chalouhi N1, Zanaty M, Whiting A, ... This is a case series with prospective data collection on 20 patients with freshly ruptured aneurysms who were treated with PED ... In our preliminary experience, treatment of ruptured aneurysms with the PED was associated with low complication rates, high ... To assess the safety and efficacy of the PED in ruptured intracranial aneurysms. ...
From March 1984 to March 1985, 24 patients required repair of an infrarenal abdominal aortic aneurysm. Four patients underwent ... Anecdotal reports of chronic contained rupture of abdominal aortic aneurysms exist. Their existence and implications have been ... Chronic contained rupture of abdominal aortic aneurysms Arch Surg. 1986 May;121(5):542-6. doi: 10.1001/archsurg. ... Seven patients (35%) were demonstrated to have a rupture of the aneurysm and a retroperitoneal hematoma on the computed ...
Ruptured Thoracic Aneurysms. To Stent or Not to Stent?. Joseph S. Coselli, Raja R. Gopaldas ...
Publication date: Available online 23 April 2020Source: Cirugía Española (English Edition)Author(s): Rosa Martí-Fernández, Elena Muñoz-Forner, Facundo Machado-Fernández, Ivan Martín-González, Marina Garcés-Albir...
The care given to patients after ruptured abdominal aortic aneurysm (rAAA) in the US outstrips that in English NHS hospitals, ... The care given to patients after ruptured abdominal aortic aneurysm (rAAA) in the US outstrips that in English NHS hospitals, ... Survival after ruptured abdominal aortic aneurysm significantly lower in England than USA. Lancet ... Survival after ruptured abdominal aortic aneurysm significantly lower in England than USA ...
Vascular Pathology: Vascular Disease: Ruptured Splenic Artery Aneurysm. Vascular Pathology: Vascular Disease: Ruptured Splenic ... Autopsy revealed a ruptured splenic aneurysm, with a 3Ã?,Ã?,½ pint haemoperitoneum. No other vascular anomalies were present. ... Previous Vascular Pathology: Vascular Disease: Aneurysms of Basilar and Coronary Arteries * Next Vascular Pathology: Infectious ...
Surgical management of ruptured mycotic aortic aneurysm induced by Klebsiella pneumoniae. Kim, Sang Dong; Hwang, Jeong Kye; ... Surgical management of ruptured mycotic aortic aneurysm induced by Klebsiella pneumoniae. Chin Med J 2018;00. doi: 10.1097/ ... Surgical management of ruptured mycotic aortic aneurysm induced by Klebsiella pneumoniae Chinese Medical Journal132(1):89-91, ... Home , January 5, 2019 - Volume 132 - Issue 1 , Surgical management of ruptured mycotic aortic aneurysm indu... ...
CT image of the head in a person with a ruptured aneurysm shows a massive subarachnoid and intraventricular hemorrhage. A ... This axial (cross sectional) CT image of the head in a person with a ruptured aneurysm shows a massive subarachnoid and ...
These can continue to expand and rupture spontaneously, exsanguinate, and cause death.AAA rupture is an important cause of ... Rupture - Abdominal aortic aneurysms (AAAs) are segmental dilatations of the aortic wall that cause the vessel to be larger ... Fortunately, not all aortic aneurysms reach the point of rupture. Many start small and stay small. Others slowly expand over ... Aortic aneurysms can house small blood clots. If a blood clot breaks loose from the inside wall of an aneurysm and travels into ...
... having sex or even getting angry may boost the risk of it rupturing, a new study suggests. ... If you have a brain aneurysm, drinking coffee, ... Sex risks brain aneurysm rupture. If you have a brain aneurysm ... Even if you do have an aneurysm, its unlikely to bother you. We think most aneurysms never rupture, said Vlak, a neurologist ... If you have a brain aneurysm, drinking coffee, having sex or even getting angry may boost the risk of it rupturing, a new study ...
... and rupture of intracranial saccular aneurysms are reviewed. Aneurysms form as a result of an interplay between hemodynamic ... and rupture of intracranial saccular aneurysms are reviewed. Aneurysms form as a result of an interplay between hemodynamic ... Origin, growth, and rupture of saccular aneurysms: a review Neurosurgery. 1981 Feb;8(2):248-60. doi: 10.1227/00006123-198102000 ... Rupture of aneurysms is caused by the same hemodynamic factors that effect growth and is also influenced by extramural pressure ...
  • Enlargement of aneurysms results from an interplay between mechanical factors, such as self-excitation and resonance, that produce structural fatigue and pathological processes of repair of the aneurysmal wall. (nih.gov)
  • With ongoing resuscitation, he underwent an abdominal CT scan showing active bleeding originating from the right iliac limb of the aortic stent graft, bleeding into a ruptured aneurysmal sac and into the abdomen (type III endoleak) ( Figure 1 ). (cmaj.ca)
  • Once ruptured, however, prompt aneurysmal obliteration (either surgical clipping or endovascular coiling) should be helpful in decreasing the rate of poor outcomes. (medindia.net)
  • It is widely known that aneurysmal rupture is uncommon in the first two decades of life. (springer.com)
  • MRI showed peri-aneurysmal edema of the right temporal lobe, which could be either a complication of the implanted Hydrocoils or due to complete thrombosis of the aneurysm, confirmed by a subsequent follow-up angiography. (springer.com)
  • Conclusions- Pressure loss coefficient may be a potential parameter to predict future rupture of unruptured aneurysms. (ahajournals.org)
  • CONCLUSIONS: Patients with adequately occluded aneurysms by coiling at short-term follow-up are at low risk for recurrent SAH in the long term. (uva.nl)
  • Conclusions- The current study describes a novel aortic aneurysm animal model induced by mineralocorticoid receptor agonist and high salt, and reveals a previously unrecognized but potentially significant role of aldosterone in the pathogenesis of aortic aneurysm. (ahajournals.org)
  • stent has been widespread used in wide-necked intracranial aneurysms and good efficacy has been achieved, but there are few reports on its applications in very small ruptured intracranial aneurysms in literatures. (bioportfolio.com)
  • Two months after the first intervention, the wide necked remnant of the aneurysm was covered with a single Derivo flow diverter (Acandis) by reconstruction of a relatively long ICA segment, while the fetal origin of the PCA, originating from the neck, had to remain patent. (springer.com)
  • THURSDAY, April 5, 2018 (American Heart Association) -- People who learn they have an unruptured brain aneurysm typically have two options: surgery or watch and wait. (hon.ch)
  • Ruptured hepatic aneurysm as first presenting symptom of polyarteritis nodosa Roberto, Maria;Meytes, Vadim;Liu, Shinban 2018-02-01 00:00:00 Polyarteritis nodosa (PAN) is an inflammatory vasculitis that creates regions of stenosis and aneurysm formation. (deepdyve.com)
  • Computed tomography (CT) and magnetic resonance angiogram (MRA) - These imaging techniques give a more detailed view of the aneurysm. (wikipedia.org)
  • A review of the entire series shows that in 84 cases the aneurysm had not ruptured, whilst in 89 the lesion had not been revealed by angiography in our department ( Table 1 ). (thejns.org)
  • If detected before it ruptures, an AAA that is two inches or larger can be repaired either surgically or with minimally invasive endovascular aneurysm repair (EVAR). (prweb.com)
  • All 58 patients were determined to be EVAR-suitable by independent reviewers, meaning that the anatomy of the blood vessels used to access the aneurysm, as well as the aneurysm itself, were favorable for the procedure. (prweb.com)
  • A new type of EVAR device that treats the entire aneurysm - a bag instead of a tube - could solve some of the problems of endografts, including leaking and shifting of the device. (prweb.com)
  • In particular, increased use of a less invasive procedure known as endovascular aneurysm repair (EVAR) could save more lives and help to close the mortality gap. (eurekalert.org)
  • Given what a devastating event a ruptured brain aneurysm is, we are very motivated to identify the real risk factors for rupture," said the study's lead author, J. Pablo Villablanca, M.D., chief of diagnostic neuroradiology at the David Geffen School of Medicine at the University of California, Los Angeles. (medicalxpress.com)