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.
The vessels carrying blood away from the heart.
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.
The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.
The arterial blood vessels supplying the CEREBRUM.
The short wide vessel arising from the conus arteriosus of the right ventricle and conveying unaerated blood to the lungs.
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.
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.
Infarctions that occur in the BRAIN STEM which is comprised of the MIDBRAIN; PONS; and MEDULLA OBLONGATA. There are several named syndromes characterized by their distinctive clinical manifestations and specific sites of ischemic injury.
Radiography of the vascular system of the brain after injection of a contrast medium.
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).
Arteries which arise from the abdominal aorta and distribute to most of the intestines.
A branch of the abdominal aorta which supplies the kidneys, adrenal glands and ureters.
The main artery of the thigh, a continuation of the external iliac artery.
The physiological widening of BLOOD VESSELS by relaxing the underlying VASCULAR SMOOTH MUSCLE.
The physiological narrowing of BLOOD VESSELS by contraction of the VASCULAR SMOOTH MUSCLE.
Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.
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)
The nonstriated involuntary muscle tissue of blood vessels.
Either of two large arteries originating from the abdominal aorta; they supply blood to the pelvis, abdominal wall and legs.
Surgical therapy of ischemic coronary artery disease achieved by grafting a section of saphenous vein, internal mammary artery, or other substitute between the aorta and the obstructed coronary artery distal to the obstructive lesion.
The direct continuation of the brachial trunk, originating at the bifurcation of the brachial artery opposite the neck of the radius. Its branches may be divided into three groups corresponding to the three regions in which the vessel is situated, the forearm, wrist, and hand.
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.
Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles and mammary gland.
Drugs used to cause dilation of the blood vessels.
Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.
The domestic dog, Canis familiaris, comprising about 400 breeds, of the carnivore family CANIDAE. They are worldwide in distribution and live in association with people. (Walker's Mammals of the World, 5th ed, p1065)
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.
A biochemical messenger and regulator, synthesized from the essential amino acid L-TRYPTOPHAN. In humans it is found primarily in the central nervous system, gastrointestinal tract, and blood platelets. Serotonin mediates several important physiological functions including neurotransmission, gastrointestinal motility, hemostasis, and cardiovascular integrity. Multiple receptor families (RECEPTORS, SEROTONIN) explain the broad physiological actions and distribution of this biochemical mediator.
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.
The circulation of blood through the BLOOD VESSELS of the BRAIN.
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.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
The largest branch of the celiac trunk with distribution to the spleen, pancreas, stomach and greater omentum.
The continuation of the axillary artery; it branches into the radial and ulnar arteries.
A white crystal or crystalline powder used in BUFFERS; FERTILIZERS; and EXPLOSIVES. It can be used to replenish ELECTROLYTES and restore WATER-ELECTROLYTE BALANCE in treating HYPOKALEMIA.
An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels.
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.
The veins and arteries of the HEART.
A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.
A branch of the celiac artery that distributes to the stomach, pancreas, duodenum, liver, gallbladder, and greater omentum.
Drugs used to cause constriction of the blood vessels.
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.
A group of compounds that are monomethyl derivatives of pyridines. (From Dorland, 28th ed)
A serotonin agonist that acts selectively at 5HT1 receptors. It is used in the treatment of MIGRAINE DISORDERS.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
A neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.
Single pavement layer of cells which line the luminal surface of the entire vascular system and regulate the transport of macromolecules and blood components.
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.
A non-invasive technique using ultrasound for the measurement of cerebrovascular hemodynamics, particularly cerebral blood flow velocity and cerebral collateral flow. With a high-intensity, low-frequency pulse probe, the intracranial arteries may be studied transtemporally, transorbitally, or from below the foramen magnum.
The arterial trunk that arises from the abdominal aorta and after a short course divides into the left gastric, common hepatic and splenic arteries.
Brief reversible episodes of focal, nonconvulsive ischemic dysfunction of the brain having a duration of less than 24 hours, and usually less than one hour, caused by transient thrombotic or embolic blood vessel occlusion or stenosis. Events may be classified by arterial distribution, temporal pattern, or etiology (e.g., embolic vs. thrombotic). (From Adams et al., Principles of Neurology, 6th ed, pp814-6)
Vascular diseases characterized by thickening and hardening of the walls of ARTERIES inside the SKULL. There are three subtypes: (1) atherosclerosis with fatty deposits in the ARTERIAL INTIMA; (2) Monckeberg's sclerosis with calcium deposits in the media and (3) arteriolosclerosis involving the small caliber arteries. Clinical signs include HEADACHE; CONFUSION; transient blindness (AMAUROSIS FUGAX); speech impairment; and HEMIPARESIS.
The tearing or bursting of the weakened wall of the aneurysmal sac, usually heralded by sudden worsening pain. The great danger of a ruptured aneurysm is the large amount of blood spilling into the surrounding tissues and cavities, causing HEMORRHAGIC SHOCK.
Artery originating from the internal carotid artery and distributing to the eye, orbit and adjacent facial structures.
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.
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.
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.
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.
Radiography of blood vessels after injection of a contrast medium.
The front part of the hindbrain (RHOMBENCEPHALON) that lies between the MEDULLA and the midbrain (MESENCEPHALON) ventral to the cerebellum. It is composed of two parts, the dorsal and the ventral. The pons serves as a relay station for neural pathways between the CEREBELLUM to the CEREBRUM.
Specialized arterial vessels in the umbilical cord. They carry waste and deoxygenated blood from the FETUS to the mother via the PLACENTA. In humans, there are usually two umbilical arteries but sometimes one.
Narrowing or occlusion of the RENAL ARTERY or arteries. It is due usually to ATHEROSCLEROSIS; FIBROMUSCULAR DYSPLASIA; THROMBOSIS; EMBOLISM, or external pressure. The reduced renal perfusion can lead to renovascular hypertension (HYPERTENSION, RENOVASCULAR).
Arteries originating from the subclavian or axillary arteries and distributing to the anterior thoracic wall, mediastinal structures, diaphragm, pectoral muscles, mammary gland and the axillary aspect of the chest wall.
The neural systems which act on VASCULAR SMOOTH MUSCLE to control blood vessel diameter. The major neural control is through the sympathetic nervous system.
Arteries arising from the external carotid or the maxillary artery and distributing to the temporal region.
The formation of an area of NECROSIS in the CEREBRUM caused by an insufficiency of arterial or venous blood flow. Infarcts of the cerebrum are generally classified by hemisphere (i.e., left vs. right), lobe (e.g., frontal lobe infarction), arterial distribution (e.g., INFARCTION, ANTERIOR CEREBRAL ARTERY), and etiology (e.g., embolic infarction).
Left bronchial arteries arise from the thoracic aorta, the right from the first aortic intercostal or the upper left bronchial artery; they supply the bronchi and the lower trachea.
A powerful vasodilator used in emergencies to lower blood pressure or to improve cardiac function. It is also an indicator for free sulfhydryl groups in proteins.
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.
The continuation of the femoral artery coursing through the popliteal fossa; it divides into the anterior and posterior tibial arteries.
That phase of a muscle twitch during which a muscle returns to a resting position.
The larger of the two terminal branches of the brachial artery, beginning about one centimeter distal to the bend of the elbow. Like the RADIAL ARTERY, its branches may be divided into three groups corresponding to their locations in the forearm, wrist, and hand.
A volatile vasodilator which relieves ANGINA PECTORIS by stimulating GUANYLATE CYCLASE and lowering cytosolic calcium. It is also sometimes used for TOCOLYSIS and explosives.
A clinically significant reduction in blood supply to the BRAIN STEM and CEREBELLUM (i.e., VERTEBROBASILAR INSUFFICIENCY) resulting from reversal of blood flow through the VERTEBRAL ARTERY from occlusion or stenosis of the proximal subclavian or brachiocephalic artery. Common symptoms include VERTIGO; SYNCOPE; and INTERMITTENT CLAUDICATION of the involved upper extremity. Subclavian steal may also occur in asymptomatic individuals. (From J Cardiovasc Surg 1994;35(1):11-4; Acta Neurol Scand 1994;90(3):174-8)
The relationship between the dose of an administered drug and the response of the organism to the drug.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
Regional infusion of drugs via an arterial catheter. Often a pump is used to impel the drug through the catheter. Used in therapy of cancer, upper gastrointestinal hemorrhage, infection, and peripheral vascular disease.
A branch arising from the internal iliac artery in females, that supplies blood to the uterus.
Use of infusions of FIBRINOLYTIC AGENTS to destroy or dissolve thrombi in blood vessels or bypass grafts.
The part of the brain that connects the CEREBRAL HEMISPHERES with the SPINAL CORD. It consists of the MESENCEPHALON; PONS; and MEDULLA OBLONGATA.
An involuntary contraction of a muscle or group of muscles. Spasms may involve SKELETAL MUSCLE or SMOOTH MUSCLE.
The condition of an anatomical structure's being constricted beyond normal dimensions.
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.
The flow of BLOOD through or around an organ or region of the body.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
Delivery of drugs into an artery.
A profound state of unconsciousness associated with depressed cerebral activity from which the individual cannot be aroused. Coma generally occurs when there is dysfunction or injury involving both cerebral hemispheres or the brain stem RETICULAR FORMATION.
Branch of the common carotid artery which supplies the exterior of the head, the face, and the greater part of the neck.
Elements of limited time intervals, contributing to particular results or situations.
A stable prostaglandin endoperoxide analog which serves as a thromboxane mimetic. Its actions include mimicking the hydro-osmotic effect of VASOPRESSIN and activation of TYPE C PHOSPHOLIPASES. (From J Pharmacol Exp Ther 1983;224(1): 108-117; Biochem J 1984;222(1):103-110)
A calcium channel blockader with preferential cerebrovascular activity. It has marked cerebrovascular dilating effects and lowers blood pressure.
Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)
A strain of albino rat used widely for experimental purposes because of its calmness and ease of handling. It was developed by the Sprague-Dawley Animal Company.
The condition of an anatomical structure's being dilated beyond normal dimensions.
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.
Localized reduction of blood flow to brain tissue due to arterial obstruction or systemic hypoperfusion. This frequently occurs in conjunction with brain hypoxia (HYPOXIA, BRAIN). Prolonged ischemia is associated with BRAIN INFARCTION.
A strain of Rattus norvegicus used as a normotensive control for the spontaneous hypertensive rats (SHR).
Precursor of epinephrine that is secreted by the adrenal medulla and is a widespread central and autonomic neurotransmitter. Norepinephrine is the principal transmitter of most postganglionic sympathetic fibers and of the diffuse projection system in the brain arising from the locus ceruleus. It is also found in plants and is used pharmacologically as a sympathomimetic.
Damages to the CAROTID ARTERIES caused either by blunt force or penetrating trauma, such as CRANIOCEREBRAL TRAUMA; THORACIC INJURIES; and NECK INJURIES. Damaged carotid arteries can lead to CAROTID ARTERY THROMBOSIS; CAROTID-CAVERNOUS SINUS FISTULA; pseudoaneurysm formation; and INTERNAL CAROTID ARTERY DISSECTION. (From Am J Forensic Med Pathol 1997, 18:251; J Trauma 1994, 37:473)
A free radical gas produced endogenously by a variety of mammalian cells, synthesized from ARGININE by NITRIC OXIDE SYNTHASE. Nitric oxide is one of the ENDOTHELIUM-DEPENDENT RELAXING FACTORS released by the vascular endothelium and mediates VASODILATION. It also inhibits platelet aggregation, induces disaggregation of aggregated platelets, and inhibits platelet adhesion to the vascular endothelium. Nitric oxide activates cytosolic GUANYLATE CYCLASE and thus elevates intracellular levels of CYCLIC GMP.
A spectrum of pathological conditions of impaired blood flow in the brain. They can involve vessels (ARTERIES or VEINS) in the CEREBRUM, the CEREBELLUM, and the BRAIN STEM. Major categories include INTRACRANIAL ARTERIOVENOUS MALFORMATIONS; BRAIN ISCHEMIA; CEREBRAL HEMORRHAGE; and others.
One of three principal openings in the SUBARACHNOID SPACE. They are also known as cerebellomedullary cistern, and collectively as cisterns.
Methods of preparing tissue specimens for visualization using an electron microscope, usually a scanning electron microscope. The methods involve the creation of exact copies of the specimens by making a mold or cast (i.e., replica) of the specimen.
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.
An inhibitor of nitric oxide synthetase which has been shown to prevent glutamate toxicity. Nitroarginine has been experimentally tested for its ability to prevent ammonia toxicity and ammonia-induced alterations in brain energy and ammonia metabolites. (Neurochem Res 1995:200(4):451-6)
A serotonin receptor antagonist in the CENTRAL NERVOUS SYSTEM used as an antipsychotic.
Procedures to cause the disintegration of THROMBI by physical interventions.
Fibrinolysin or agents that convert plasminogen to FIBRINOLYSIN.
A piperazine derivative having histamine H1-receptor and calcium-channel blocking activity with vasodilating and antiemetic properties but it induces PARKINSONIAN DISORDERS.
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.
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.
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
Use of a balloon catheter for dilation of an occluded artery. It is used in treatment of arterial occlusive diseases, including renal artery stenosis and arterial occlusions in the leg. For the specific technique of BALLOON DILATION in coronary arteries, ANGIOPLASTY, BALLOON, CORONARY is available.
PRESSURE of the BLOOD on the ARTERIES and other BLOOD VESSELS.
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.
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.
Inflammation of the NASAL MUCOSA in the SPHENOID SINUS. Isolated sphenoid sinusitis is uncommon. It usually occurs in conjunction with other paranasal sinusitis.
Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction.
Synthetic compounds that are analogs of the naturally occurring prostaglandin endoperoxides and that mimic their pharmacologic and physiologic activities. They are usually more stable than the naturally occurring compounds.
NECROSIS occurring in the MIDDLE CEREBRAL ARTERY distribution system which brings blood to the entire lateral aspects of each CEREBRAL HEMISPHERE. Clinical signs include impaired cognition; APHASIA; AGRAPHIA; weak and numbness in the face and arms, contralaterally or bilaterally depending on the infarction.
The continuation of the subclavian artery; it distributes over the upper limb, axilla, chest and shoulder.
A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)
Pathological conditions of intracranial ARTERIES supplying the CEREBRUM. These diseases often are due to abnormalities or pathological processes in the ANTERIOR CEREBRAL ARTERY; MIDDLE CEREBRAL ARTERY; and POSTERIOR CEREBRAL ARTERY.
The degree to which BLOOD VESSELS are not blocked or obstructed.
A naturally occurring prostaglandin that has oxytocic, luteolytic, and abortifacient activities. Due to its vasocontractile properties, the compound has a variety of other biological actions.
Sudden ISCHEMIA in the RETINA due to blocked blood flow through the CENTRAL RETINAL ARTERY or its branches leading to sudden complete or partial loss of vision, respectively, in the eye.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
A nonapeptide messenger that is enzymatically produced from KALLIDIN in the blood where it is a potent but short-lived agent of arteriolar dilation and increased capillary permeability. Bradykinin is also released from MAST CELLS during asthma attacks, from gut walls as a gastrointestinal vasodilator, from damaged tissues as a pain signal, and may be a neurotransmitter.
The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.
Inflammation of blood vessels within the central nervous system. Primary vasculitis is usually caused by autoimmune or idiopathic factors, while secondary vasculitis is caused by existing disease process. Clinical manifestations are highly variable but include HEADACHE; SEIZURES; behavioral alterations; INTRACRANIAL HEMORRHAGES; TRANSIENT ISCHEMIC ATTACK; and BRAIN INFARCTION. (From Adams et al., Principles of Neurology, 6th ed, pp856-61)
Blood clot formation in any part of the CAROTID ARTERIES. This may produce CAROTID STENOSIS or occlusion of the vessel, leading to TRANSIENT ISCHEMIC ATTACK; CEREBRAL INFARCTION; or AMAUROSIS FUGAX.
A dipolar ionic buffer.
An NADPH-dependent enzyme that catalyzes the conversion of L-ARGININE and OXYGEN to produce CITRULLINE and NITRIC OXIDE.
A 21-amino acid peptide produced in a variety of tissues including endothelial and vascular smooth-muscle cells, neurons and astrocytes in the central nervous system, and endometrial cells. It acts as a modulator of vasomotor tone, cell proliferation, and hormone production. (N Eng J Med 1995;333(6):356-63)
Arteries which supply the dura mater.
Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).

Large and giant middle to lower basilar trunk aneurysms treated by surgical and interventional neuroradiological methods. (1/848)

Treatment of large and giant aneurysms of the basilar artery remains difficult and controversial. Three large or giant aneurysms of the lower basilar artery were treated with a combination of surgical and interventional neuroradiological procedures. All patients underwent the balloon occlusion test with hypotensive challenge (blood pressure reduced to 70% of the control value). The third patient did not tolerate the test. In the first patient, both vertebral arteries were occluded through a craniotomy. In the second patient, both the aneurysm and the basilar artery were occluded by detached balloons. In the third patient, one vertebral artery was occluded by surgical clipping and the other by detached helical coils and fiber coils. In spite of anti-coagulation and anti-platelet therapy, postoperative thrombotic or embolic ischemia occurred in the second and third patients. Fibrinolytic therapy promptly corrected the ischemic symptoms, but the second patient developed hemorrhagic complications at the craniotomy area 2 hours later. At follow-up examination, the first patient had only 8th cranial nerve paresis, the second patient who had a hemorrhagic complication was bed-ridden, and the third patient had no deficit. Interventional occlusion requires a longer segment of the parent artery compared to surgical occlusion of the parent artery and might cause occlusion of the perforating arteries. However, selected use of various coils can occlude only a short segment of the parent artery. Thus, the postoperative management of thromboembolic ischemia after the occlusion of the parent artery is easier using the interventional technique.  (+info)

CT angiography and Doppler sonography for emergency assessment in acute basilar artery ischemia. (2/848)

BACKGROUND AND PURPOSE: Both Doppler sonography (DS) and spiral CT angiography (CTA) are noninvasive vascular assessment tools with a high potential for application in acute cerebral ischemia. The usefulness of CTA for vascular diagnosis in acute basilar artery (BA) ischemia has not yet been studied. METHODS: We prospectively studied 19 patients (mean+/-SD age, 58+/-11 years) with clinically suspected acute BA occlusion by DS and CTA. Prior extracranial and transcranial DS was performed in all but 1 patient, with DS 4 hours after CTA. In 6 of 19 patients, we performed digital subtraction angiography. RESULTS: CTA was diagnostic in all but 1 patient. CTA revealed complete BA occlusion in 9 patients and incomplete BA occlusion with some residual flow in 2 patients. A patent BA was shown in 7 patients. Because of severe BA calcification, CTA results were inconclusive in 1 patient. DS was diagnostic in only 7 of 19 patients, indicating certain BA occlusion in 3 patients and BA patency in 4 patients. In an additional 9 patients, the results of DS were inconclusive. DS was false-negative in 2 patients with distal BA occlusion shown by CTA and digital subtraction angiography. In 1 patient with DS performed after CTA, recanalization was demonstrated. In addition to the diagnosis or exclusion of BA occlusion, CTA provided information on the exact site and length of BA occlusion and collateral pathways. In our series, CTA results prompted indication for intra-arterial thrombolysis in 5 patients. CONCLUSIONS: CTA was superior to DS in the assessment of BA patency in patients with the syndrome of acute BA ischemia in terms of feasibility and conclusiveness, particularly in cases with distal BA occlusion. Our study confirmed the usefulness of combined extracranial and transcranial DS in the diagnosis and exclusion of proximal BA occlusion.  (+info)

Kir2.1 encodes the inward rectifier potassium channel in rat arterial smooth muscle cells. (3/848)

1. The molecular nature of the strong inward rectifier K+ channel in vascular smooth muscle was explored by using isolated cell RT-PCR, cDNA cloning and expression techniques. 2. RT-PCR of RNA from single smooth muscle cells of rat cerebral (basilar), coronary and mesenteric arteries revealed transcripts for Kir2.1. Transcripts for Kir2.2 and Kir2.3 were not found. 3. Quantitative PCR analysis revealed significant differences in transcript levels of Kir2.1 between the different vascular preparations (n = 3; P < 0.05). A two-fold difference was detected between Kir2.1 mRNA and beta-actin mRNA in coronary arteries when compared with relative levels measured in mesenteric and basilar preparations. 4. Kir2.1 was cloned from rat mesenteric vascular smooth muscle cells and expressed in Xenopus oocytes. Currents were strongly inwardly rectifying and selective for K+. 5. The effect of extracellular Ba2+, Ca2+, Mg2+ and Cs2+ ions on cloned Kir2.1 channels expressed in Xenopus oocytes was examined. Ba2+ and Cs+ block were steeply voltage dependent, whereas block by external Ca2+ and Mg2+ exhibited little voltage dependence. The apparent half-block constants and voltage dependences for Ba2+, Cs+, Ca2+ and Mg2+ were very similar for inward rectifier K+ currents from native cells and cloned Kir2.1 channels expressed in oocytes. 6. Molecular studies demonstrate that Kir2.1 is the only member of the Kir2 channel subfamily present in vascular arterial smooth muscle cells. Expression of cloned Kir2.1 in Xenopus oocytes resulted in inward rectifier K+ currents that strongly resemble those that are observed in native vascular arterial smooth muscle cells. We conclude that Kir2.1 encodes for inward rectifier K+ channels in arterial smooth muscle.  (+info)

Inhibition of copper/zinc superoxide dismutase impairs NO.-mediated endothelium-dependent relaxations. (4/848)

The superoxide anion (O-2.) appears to be an important modulator of nitric oxide (NO.) bioavailability. The present study was designed to characterize the role of copper/zinc superoxide dismutase (Cu/Zn SOD) in endothelium-dependent relaxations. Cu/Zn SOD was inhibited with the Cu2+ chelator diethyldithiocarbamic acid (DETCA). In isolated canine basilar arteries, DETCA (7.6 x 10(-3) M) inhibited total vascular SOD activity by 46% (P < 0.0001, n = 6-8 dogs). DETCA (7.6 x 10(-3) M) significantly reduced relaxations to bradykinin and A-23187 (P < 0.05, n = 7-11). The inhibitory effect of DETCA was abolished by the O-2. scavenger 4,5-dihydroxy-1,3-benzenedisulfonic acid (Tiron; 9.4 x 10(-3) M; P < 0.05, n = 6-13). Tiron significantly potentiated the relaxations to bradykinin in control rings (P < 0.05, n = 13), and the nitric oxide synthase inhibitor Nomega-nitro-L-arginine methyl ester (L-NAME; 3 x 10(-4) M) abolished these relaxations (P < 0.0001, n = 6). DETCA and Tiron had no effect on the relaxations to diethylamine-NONOate or forskolin (P > 0.05, n = 6). Our results demonstrate that endothelium-dependent relaxations mediated by NO. are impaired after the inhibition of Cu/Zn SOD. Relaxations to bradykinin (but not A-23187) were significantly augmented by Tiron. Pharmacological scavenging of O-2. reverses the effect of Cu/Zn SOD inhibition.  (+info)

Prevention of persistent cerebral smooth muscle contraction in response to whole blood. (5/848)

Using an in vitro system designed to measure arterial constriction, we have demonstrated the importance of platelet function in maintaining cerebral smooth muscle contraction after whole blood injection. We tested two agents, acetyl salicylic acid (ASA) and phthalazinol, both known to interfere with platelet function. In control tests normal rabbit and monkey blood produced a reliable and persistent arterial constriction. In experimental tests blood drawn from animals premedicated with ASA and phthalazinol failed to produce a persistent contraction. These results support the hypothesis that chemicals released during platelet aggregation may be important in persistent vasospasm.  (+info)

Epilepsy after two different neurosurgical approaches to the treatment of ruptured intracranial aneurysm. (6/848)

One-hundred-and-fifty-two patients who underwent surgery for intracranial aneurysm were studied to determine the incidence of postoperative epilepsy in relation to the site of the aneurysm and the type of surgical approach. The overall incidence of epilepsy was 22%. Of the 116 patients treated by the intracranial approach 27.5% developed epilepsy, in contrast with only 5% of the 36 patients who had carotid artery ligation in the neck. Epilepsy occurred most frequently (35%) with middle cerebral artery aneurysms, especially if moderate or severe operative trauma was sustained and there was postoperative dysphasia.  (+info)

The inhibition of nicotine-evoked relaxation of the guinea-pig isolated basilar artery by some analgesic drugs and progesterone. (7/848)

1. The purpose of this study was to investigate the mechanism of nicotine-evoked relaxation of the guinea-pig isolated basilar artery and to study the effects of drugs associated with the aetiology or treatment of migraine on the nicotine response. 2. The guinea-pig isolated basilar artery, pre-contracted with prostaglandin F2alpha (PGF2alpha), in the presence of atropine (3 microM) and guanethidine (3 microM), relaxed on addition of nicotine (0.1 mM) in approximately 50% of preparations. The responses to nicotine were of short duration and blocked in preparations pre-treated for 10 min with capsaicin (1 microM) and are therefore probably a consequence of the stimulation of trigeminal C fibre terminals. 3. Responses to nicotine were reduced in the presence of 5-carboxamidotryptamine, 5-hydroxytryptamine and sumatriptan in that order of potency. This is consistent with a 5-HT1 receptor mechanism. These agonists evoked small additional contractions in vessels pre-contracted with PGF2alpha. 4. Indomethacin (0.3-10 microM), aspirin (10-30 microM), and nitro-L-arginine methyl ester (L-NAME, 0.1 mM) reduced nicotine-evoked relaxation of the basilar artery, suggesting the involvement of both nitric oxide and cyclo-oxygenase products in this response. 5. Progesterone (1 microM) markedly reduced the response to nicotine, a possible reflection of the ion channel blocking activity of high concentrations of this compound. 6. The guinea-pig basilar artery is a preparation in which the effects of drugs on responses to stimulation of trigeminal nerve terminals can be studied in vitro and may thus be of interest in assessing the actions of drugs used in treatment of headache.  (+info)

Inhibitory effect of 4-aminopyridine on responses of the basilar artery to nitric oxide. (8/848)

1. Voltage-dependent K+ channels are present in cerebral arteries and may modulate vascular tone. We used 200 microM 4-aminopyridine (4-AP), thought to be a relatively selective inhibitor of voltage-dependent K+ channels at this concentration, to test whether activation of these channels may influence baseline diameter of the basilar artery and dilator responses to nitric oxide (NO) and cyclic GMP in vivo. 2. Using a cranial window in anaesthetized rats, topical application of 4-AP to the basilar artery (baseline diameter = 240+/-5 microm, mean +/- s.e.mean) produced 10+/-1% constriction. Sodium nitroprusside (a NO donor), acetylcholine (which stimulates endothelial release of NO), 8-bromo cyclic GMP (a cyclic GMP analogue), cromakalim (an activator of ATP-sensitive K+ channels) and papaverine (a non-NO, non-K+ channel-related vasodilator) produced concentration-dependent vasodilator responses that were reproducible. 3. Responses to 10 and 100 nM nitroprusside were inhibited by 4-AP (20+/-4 vs 8+/-2% and 51+/-5 vs 33+/-5%, respectively, n=10; P<0.05). Responses to acetylcholine and 8-bromo cyclic GMP were also partially inhibited by 4-AP. In contrast, 4-AP had no effect on vasodilator responses to cromakalim or papaverine. These findings suggest that NO/cyclic GMP-induced dilator responses of the basilar artery are selectively inhibited by 4-aminopyridine. 4. Responses to nitroprusside were also markedly inhibited by 10 microM 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (an inhibitor of soluble guanylate cyclase; 16+/-4 vs 1+/-1% and 44+/-7 vs 7+/-1%; n=10; P<0.05). 5. Thus, dilator responses of the rat basilar artery to NO appear to be mediated by activation of soluble guanylate cyclase and partially by activation of a 4-aminopyridine-sensitive mechanism. The most likely mechanism would appear to be activation of voltage-dependent K+ channels by NO/cyclic GMP.  (+info)

TY - JOUR. T1 - MRI of basilar artery hypoplasia associated with persistent primitive trigeminal artery. AU - Boyko, Orest. AU - Curnes, J. T.. AU - Blatter, D. D.. AU - Parker, D. L.. PY - 1996/1. Y1 - 1996/1. N2 - We report three patients with persistent trigeminal arteries, in all of whom the proximal basilar artery was hypoplastic. We draw attention to this common observation, which should not be mistaken for acquired narrowing.. AB - We report three patients with persistent trigeminal arteries, in all of whom the proximal basilar artery was hypoplastic. We draw attention to this common observation, which should not be mistaken for acquired narrowing.. KW - Basilar artery. KW - Congenital variants. KW - Trigeminal artery. UR - http://www.scopus.com/inward/record.url?scp=0030061136&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=0030061136&partnerID=8YFLogxK. U2 - 10.1007/s002340050184. DO - 10.1007/s002340050184. M3 - Article. C2 - 8773267. AN - SCOPUS:0030061136. VL - ...
Acute basilar artery thrombosis is associated with a poor prognosis. However, the advent of high-quality, reliable, and noninvasive technology (eg, magnetic resonance imaging [MRI]) has made its diagnosis possible even in subjects with mild symptoms (see the image below).
Acute basilar artery thrombosis is associated with a poor prognosis. However, the advent of high-quality, reliable, and noninvasive technology (eg, magnetic resonance imaging [MRI]) has made its diagnosis possible even in subjects with mild symptoms (see the image below).
TY - JOUR. T1 - Endothelium-independent contractions to jvg-monomethyl-l-arginine in canine basilar artery. AU - Katušić, Zvonimir S.. PY - 1991/11. Y1 - 1991/11. N2 - Background and Purpose: NG-substituted analogues of L-arginine are potent and selective inhibitors of nitric oxide synthase(s). The present study was designed to determine the effects of these analogues on the vascular smooth muscle of isolated canine basilar arteries. Methods: Basilar artery rings without endothelium were suspended for isometric tension recording in Krebs-Ringer bicarbonate solution bubbled with 94% O2-6% CO2 (temperature=37°C, pH=7.4). A radioimmunoassay technique was used to determine the levels of guanosine 3,5-cyclic monophosphate (cyclic GMP). Results: NG-Monomethyl-L-arginine (L-NMMA) caused concentration-dependent contractions, whereas the D-enantiomer and NG-nitro-L-arginine did not. Contractions to L-NMMA were reduced in the presence of L-arginine but not in the presence of D-arginine. Superoxide ...
Acute basilar artery occlusion (ABAO) causes devastating strokes that carry high mortality and morbidity. Recent trials (MR CLEAN, EXTENDI-IA, swift prime and E
TY - JOUR. T1 - Role of ATP-sensitive K+ channels in CGRP-induced dilatation of basilar artery in vivo. AU - Kitazono, Takanari. AU - Heistad, D. D.. AU - Faraci, F. M.. PY - 1993/9/22. Y1 - 1993/9/22. N2 - Stimulation of adenylate cyclase appears to activate ATP-sensitive K+ channels in the basilar artery. We tested the hypothesis that calcitonin gene-related peptide (CGRP), which increases intracellular adenosine 3,5- cyclic monophosphate (cAMP) levels, activates ATP-sensitive K+ channels and thereby causes vasodilatation. Using a cranial window in anesthetized rats, we examined responses of the basilar artery to CGRP in vivo. We also examined responses of the artery to another vasoactive peptide, vasoactive intestinal peptide (VIP). Topical application of CGRP (10-11 to 10-8 M) increased diameter of the basilar artery. Responses of the basilar artery to CGRP were almost abolished by a CGRP1 receptor antagonist, CGRP-(8-37). Vasodilatation in response to VIP was much smaller than that ...
Atherosclerotic basilar artery stenosis, like stenosis of any other intracranial artery, is more frequent in the African American and Asian populations than in white populations. The male-to-female ra... more
Basilar artery stenosis treatment - What is the treatment and prognosis for someone with a combination of carotid occlusion/stenosis and occlusion/stenosis of the basilar artery? Depends. Artery disease in the neck vessels (carotid/basilar) is associated with risk for stroke. Your doc, vascular provider can best assess all the associated factors and give you a risk assessment. Treatments vary from medical management, nicotine cessation, stenting, surgery and combinations of them all.
Rationale: Recently our study group reported the results of the Basilar Artery International Cooperation Study (BASICS), a prospective registry of patients with an acute symptomatic basilar artery occlusion (BAO). Our observations in the BASICS registry underscore that we continue to lack a proven treatment modality for patients with an acute BAO and that current clinical practice varies widely. Furthermore, the often-held assumption that intra-arterial thrombolysis (IAT) is superior to intravenous thrombolysis (IVT) in patients with an acute symptomatic BAO is challenged by our data. The BASICS registry was observational and has all the limitations of a non-randomised study. Interpretation of results is hampered by the lack of a standard treatment protocol for all patients who entered the study.. Objective: Evaluate the efficacy and safety of IAT in addition to best medical management (BMM) in patients with basilar artery occlusion.. Study design: Randomised, multi-centre, open label, ...
The trigeminal artery is one of the embryonic anastomoses between the carotid and the vertebrobasilar systems. These anastomoses arise early during the 5 to 6 mm stage of embryonic development. The embryonic hindbrain is supplied by a pair of longitudinal neural arteries, which in turn are supplied by the carotid system through these primitive anastomoses. As the paired longitudinal neural arteries fuse to form the basilar artery, these vessels regress, typically at the 14 mm embryo stage [1, 2]. Persistence of any of these anastomoses may occur, and the persistent trigeminal artery [PTA] is the most common, accounting for 85% of cases [1].. The PTA connects the cavernous segment of the internal carotid artery and the basilar artery. It has a reported incidence of 0.2%, although actual incidence may be higher due to undiagnosed cases [1]. PTA is mostly asymptomatic, and patients usually undergo imaging for other clinical concerns. In some cases, patients present with symptoms of cerebrovascular ...
BioAssay record AID 60431 submitted by ChEMBL: Inhibitory activity against KCl induced contractile response in isolated canine basilar artery was determined expressed as vasodilation effect.
article{f5cd5108-d65d-4e15-8bae-0b0ebd620ed1, abstract = {Based on the previous finding that 5-hydroxytryptamine (5-HT) co-exists with norepinephrine (NE) in cerebrovascular sympathetic nerve fibers and can be released during electrical nerve stimulation, the postjunctional interaction between the two amines was studied in isolated basilar artery of guinea pig. A low concentration of 5-HT, which in itself has little or no constrictive effect, potentiated the weak contraction of NE by almost 300%. The amplification was antagonized by methiothepin, but not by ketanserin, and it could be mimicked by methysergide. The marked potentiation is thus probably associated with the 5-HT1-like receptors, which earlier have been found to mediate the direct vasoconstrictive action of 5-HT in this vessel preparation.}, author = {Chang, J Y and Owman, Christer}, issn = {1559-7016}, language = {eng}, number = {5}, pages = {713--716}, publisher = {Nature Publishing Group}, series = {Journal of Cerebral Blood Flow ...
The basilar artery (/ˈbæz.ɪ.lər/)[1][2] is one of the arteries that supplies the brain with oxygen-rich blood. The two vertebral arteries and the basilar artery are sometimes together called the vertebrobasilar system, which supplies blood to the posterior part of the circle of Willis and joins with blood supplied to the anterior part of the circle of Willis from the internal carotid arteries.[3] ...
Sigma-Aldrich offers abstracts and full-text articles by [Rachel Wai Sum Li, Cui Yang, Shun Wan Chan, Maggie Pui Man Hoi, Simon Ming Yuen Lee, Yiu Wa Kwan, George Pak Heng Leung].
Interventional treatment of severe intracranial stenoses using angioplasty and stent placement carries a significant risk of severe adverse events. These events are frequently caused by the intraarterial dilation but may also be precipitated by other causes related to the procedure. The authors describe a fatal subarachnoid hemorrhage during the treatment of a basilar artery (BA) stenosis caused by a vascular rupture distant from the site of angioplasty. After successful balloon dilation, an attempt to deploy a self-expanding stent failed due to the severe kinking of the stenotic segment of the BA. The angiogram performed during the intervention revealed a fatal rupture of the BA in a location not related to the angioplasty or guide wire tip. The technical aspects of the intervention are analyzed on the basis of the postmortem findings.
The pontine arteries are a number of small vessels which come off at right angles from either side of the basilar artery and supply the pons and adjacent parts of the brain. Branches of basilar artery - The basilar artery extends from the lower to the upper border of the pons. It lies in the median groove under the cover of arachnoid membrane.It divides into following branches on either side- Pontine artery Anterior inferior cerebellar artery (AICA) Superior Cerebellar artery (SCA) Posterior cerebral artery Internal auditory artery Perforators - The small branches of the basilar artery are also known as perforators and this peroforating arteries can be classified into three subgroups : (i) rostral (mesencephalic perforating arteries, distal to the SCA); (ii) middle (pontine perforating arteries, between the SCA and AICA); (iii) caudal (proximal to the AICA). There are between two and five rostral BA perforators, which have an average diameter of 250 μm; the caudal perforators vary in diameter ...
BackgroundMost reports on basilar artery (BA) occlusive disease have retrospectively described single cases or small patient series.ObjectiveTo assess clinical
Methods We present the case of a 49-year-old female with a history of smoking, who was diagnosed with a symptomatic, large vertebrobasilar junction (VBJ) aneurysm. Initially thought to be a proximal basilar dilatation, the aneurysm was later found to arise from an obscured and distended basilar fenestration. The small caliber fenestration limbs were the only access to the distal basilar artery, but stretched laterally and concealed by the aneurysm fundus. ...
Direct CCFs are included among type A fistulas according to Barrows classification. Etiologically, most dissecting CCFs are traumatic, but less commonly they may be spontaneous. Spontaneous direct CCFs are usually caused by rupture of an intracavernous carotid aneurysm, and aneurysmal CCFs account for about 20% of direct CCFs (8).. Spontaneous or traumatic CCF from the persistent trigeminal artery to the cavernous sinus and its endovascular treatment has rarely been reported (2-7). To the best of our knowledge, however, CCF caused by a ruptured aneurysm of the anomalous cerebellar artery has not been reported.. The cerebellar artery originating from the internal carotid artery was first reported by Teal et al (9). The level of the internal carotid artery from which these vessels took origin led to the conclusion that they were persistent trigeminal artery variants (1, 11). Unlike the usual persistent trigeminal artery that has a direct communication with the basilar artery, the persistent ...
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Not a section from the instruction manual of my vacuum cleaner. But models of the church as described by Peter Neilson in his book Church on the Move. He suggests that most of us work on the suction model of church - hoping to draw people in through the doors. The slipstream model, by contrast, is about believing that God is at work out in the community and that a different kind of church should form in the slipstream of that movement of grace …. Meanwhile, Ive also been reading that cheery book Turning the Tide - Report of the 2002 Scottish Census - which charts the inexorable decline of churches in Scotland. Canute tried to stop the tide coming in - my job is to stop it going out. But it does tell me that the number of people in the Scottish Episcopal Church describing themselves as being of liberal churchmanship rose by 36% between 1994 and 2002. Now thats what I call a niche market!. ...
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BACKGROUND:Cocaine use is a well-known contributing factor for both ischemic and hemorrhagic stroke; however, basilar artery thrombosis due to cocaine use is a rare entity with few cases reported in the literature. CASE REPORT:A 75-year-old African-A...
The vertebral and basilar arteries are clearly seen without dissection, narrowing, or blockage. There may be an area of decreased filling in the L PICA, but it
Object. The disturbed balance between nitric oxide and endothelin (ET)-1 in the cerebrovasculature seems to play a major role in the development of cerebral vasospasm after subarachnoid hemorrhage. Endothelin-1 represents the contractile part in this balance. In addition to the prevailing ETA receptor-dependent contractile effect, ET-1 also has ETB receptor-mediated vasodilatory attributes. The aim of the present study was to define the actual selectivity of clazosentan, the first putative highly ETA receptor-selective antagonist clinically proven to be effective in the treatment of vasospasm in the cerebrovasculature.. Methods. Rat basilar artery ring segments with endothelial function were used for the measurement of isometric force. Concentration effect curves were constructed by cumulative application of sarafotoxin S6c, ET-1, or big ET-1 in the presence or absence of clazosentan (10−9 to 10−6 M) after a precontraction was induced by prostaglandin F2α. The inhibition by clazosentan was ...
Patients admitted in severe neurological condition, with reduced consciousness and already permanent brain tissue damage, pose a dilemma to emergency medical personnel who need to weigh different therapeutic options in the face of uncertain long-term prognosis. Thrombolysis might save the life, but what kind of quality of life will follow? Vertebrobasilar cerebrovascular disease may provide the most extreme physical deprivation while leaving the faculty for contemplation as good as intact. The recent analysis of the delayed-phase outcome after BAO thrombolysis suggests that on the long term, survivors who initially reach the worst functional outcome (modified Rankin Scale 5) will subsequently either decease or improve.10 Eventually, more than half of those who recanalize will acquire functional independence. Furthermore, the perceived quality of life of the survivors seems at least fair, correlating with the level of functional independence.10. What are the risks of recanalization therapy? The ...
There is a direct connection between the left internal carotid and basilar arteries, at level of the cavernous sinus. This is below the level of the posterior communicating arteries. Note the small size of the basilar and vertebral arteries.
Introduction Chronic vertebral basilar artery occlusion is one of the most common causes of ischemic stroke, which accounts for roughly 20% of all cases. However, the evidence for the precise clinical effect in treatment of the initial segment of chronic vertebral basilar artery occlusion is...
Jung S, Mono M.L., Fischer U, Galimanis A, Findling O, De Marchis GM, Weck A, Nedeltchev K, Colucci G, Mordasini P, Brekenfeld C, El-Koussy M, Gralla J, Schroth G, Mattle HP, Arnold M. Three-months and long-term outcome and its predictors in acute basilar artery occlusion treated with intra-arterial thrombolysis. Stroke 2011;42(7):1946-51 ...
PDF Similar Articles Mail to Author Mail to Editor Effect of a Chloride Channel Inhibitor, 5-Nitro-2- (3-Phenylpropylamino)-Benzoate, on Endothelin-1 Induced Vasoconstriction in Rabbit Basilar Artery Fikret DOGULU, Sureyya BARUN, Hakan EMMEZ, Cigdem ELMAS, Baran ONAL, Hayrunnisa BOLAY BELEN, Deniz ERDOGAN, Erhan ILGIT, Yusuf SARIOGLU, Gokhan KURT, Sevim ERCAN, M. Kemal BAYKANER ...
Effect of a Chloride Channel Inhibitor, 5-Nitro-2- (3-Phenylpropylamino)-Benzoate, on Endothelin-1 Induced Vasoconstriction in Rabbit Basilar Artery Fikret DOGULU, Sureyya BARUN, Hakan EMMEZ, Cigdem ELMAS, Baran ONAL, Hayrunnisa BOLAY BELEN, Deniz ERDOGAN, Erhan ILGIT, Yusuf SARIOGLU, Gokhan KURT, Sevim ERCAN, M. Kemal BAYKANER Abstract ...
The trainer rode first and then I hopped on. It was a pretty surreal moment. Even though she felt different than any other horse Ive ridden I didnt feel nervous or unbalanced on her. I kind of felt like Id been riding her forever. I expected to be riding a baby noodle horse. She was much smoother and more forward than I anticipated. I dont think I could have asked for a better first ride. Im also happy to report that I didnt look too tall for her ...
To merely throw all the data on the table and leave it open for interpretation is not the best idea. Anyone can come in here, pick up any of the four fans you tested, and leave thinking they made a good decision, when in reality it wasnt the best decision. Im not knocking on you and I appreciate the work and effort youve put into this project. I guess what Im really trying to say is that you wrote the review - does it really hurt to add a paragraph or two, perhaps a summary or conclusion on which fan is the best ...
Hi Everyone I havent been on here for a while, hope everyone is doing great. Just wanted to get your opinion on a little embarrassing/sensitve matter. I had a SAH in DEC 09 this was clipped and have one 3mm remaining in the basilar artery which is being monitored. I came across this article (see below link) and am very anxious about sex. As my SAH in DEC 09 happened during sex Ive been so worried that since then I have refrained from this activity but abviously miss this in my
When used as specific designations within a particular article, with or without numerals, capitalize Table, Tables, Figure, and Figures.summarized in Table 2 as seen in the Table the middle third of the basilar artery (Figure 2) Do not capitalize the following words, even when used as specific designators, unless used as part of a heading or title:But: Step I diet, Schedule II drug, and Axis I of the Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition) |
When used as specific designations within a particular article, with or without numerals, capitalize Table, Tables, Figure, and Figures.summarized in Table 2 as seen in the Table the middle third of the basilar artery (Figure 2) Do not capitalize the following words, even when used as specific designators, unless used as part of a heading or title:But: Step I diet, Schedule II drug, and Axis I of the Diagnostic and Statistical Manual of Mental Disorders (Fourth Edition) |
Treatment of acute basilar artery occlusion remains clinically challenging. In this preliminary study of diffusion-perfusion MRI changes in patients treated with intra-arterial thrombolysis and studied serially with multimodal MRI, we found that diffusion-perfusion mismatch can be visualized clearly in the posterior circulation, including the brain stem, and can be seen in some patients well beyond 6 hours from symptom onset. Moreover, we were able to demonstrate improvement of this mismatch region after basilar artery recanalization with intra-arterial thrombolytic therapy. This improvement may represent therapeutic salvage of the mismatch region; however, a controlled study is required to confirm this.. Several prior reports have begun to assess the role of advanced MRI techniques in acute posterior circulation stroke.10,11 Du Mesnil de Rochement and colleagues10 studied 4 patients with acute basilar artery occlusions with DWI and MR angiography sequences. They found variable patterns of DWI ...
Pseudoaneurysms, or false aneurysms, are differentiated from true aneurysms by the layers of the artery involved. Pseudoaneurysms are the result of the rupture of all three layers of the artery: the tunica intima, media, and adventitia. The aneurysm is contained by an organized hematoma or neighboring connective tissue. With true aneurysms, the outermost layer, the adventitia, remains intact.. As a result of its secure location, injury to the basilar artery is rare.1 Only 10% of traumatic aneurysms in the brain occur in the posterior circulation. As was seen in this case, the majority of basilar artery aneurysms are associated with skull base fractures. In addition, the connective tissue surrounding the basilar artery is usually unable to contain the aneurysm, making it improbable that a patient would survive a traumatic aneurysm in the posterior circulation.2 Rapid treatment is imperative because of the high morbidity and mortality associated with basilar artery pseudoaneurysms. ...
TY - JOUR. T1 - Increased activity of calcium channels and Rho-associated kinase in the basilar artery during chronic hypertension in vivo. AU - Kitazono, Takanari. AU - Ago, Tetsuro. AU - Kamouchi, Masahiro. AU - Santa, Naohiko. AU - Ooboshi, Hiroaki. AU - Fujishima, Masatoshi. AU - Ibayashi, Setsuro. PY - 2002/5. Y1 - 2002/5. N2 - Objectives. Several factors mediating vascular responses appear to play an important role in the increased resistance of cerebral blood vessels during hypertension. The objective of this study was to elucidate the mechanisms by which hypertension increases the basal tone of the basilar artery in vivo. Methods. Using a cranial window, we examined effects of inhibitors of L-type voltage-dependent calcium channels (nicardipine) and Rho-associated kinase (Y-27632) on the baseline diameter of the basilar artery in spontaneously hypertensive rats (SHR) and compared to the responses in normotensive Wistar-Kyoto (WKY) rats. Results. Topical application of nicardipine (10-8, ...
Cerebral vasospasm is a primary complication after aneurysmal subarachnoid hemorrhage. Despite a great deal of research regarding the pathogenesis of arterial vasospasm, the mechanisms involved still remain poorly understood and, as a result, the treatment strategies employed today have controversial results in the prevention and treatment of this disease. Within the cerebral circulation, the rate of total cerebral blood flow is held within a relatively narrow range, in spite of wide variations of systemic blood pressure. Among the local regulatory mechanisms, a great deal of interest has been focused on the vascular endothelium and potassium channels, with both believed to play a major role in the regulation of vascular tone. Evidence indicates that the abnormalities in cerebro-vascular function after subarachnoid hemorrhage, in vivo, may involve alterations m endothelial and/or potassium channel function. The present study was undertaken to examine endothelium-dependent and potassium-induced ...
Cerebral vasospasm is one of the major complications of subarachnoid hemorrhage (SAH). However, its pathogenesis still remains to be elucidated, and effective therapeutic strategies are yet to be established. We have reported, in the previous meeting, that thrombin plays a key role in up-regulation of the proteinase-activated receptor-1 (PAR1) expression and development of the vasospastic response to thrombin in the basilar artery of rabbit double hemorrhage-SAH model. In the present study, we demonstrated a new strategy to prevent the development of such vasospastic response using selective PAR1 antagonists. The rabbits received two injections of autologous blood into the cisterna magna on days 0 and 2. The contractile responses were examined on day 7 using basilar artery ring preparations, in the absence of endothelial cells. Thrombin and PAR1 activating peptide (PAR1-AP) slightly contracted the control artery only at high concentrations (10 U/ml thrombin or 100 μM PAR-1AP). In SAH, the ...
A 28-year-old Pakistani man was admitted with unresolved severe headaches for the past four weeks. Magnetic resonance (MR) imaging and MR angiography showed an enhancing mass in the sphenoid sinus, bilateral cerebellar infarcts and aneurysmal dilatation of the basilar artery. The differential diagnosis included fungal infection versus neoplastic lesion. The scrappings taken through the endoscope from the sphenoid sinus were initially negative for fungal infection. However, the second biopsy, done after putting him on antifungal, itraconazole 200 mg twice daily, revealed the presence of a fungal infection (aspergillosis). MR imaging revealed extension of the fungal infection from the sphenoid sinus into the clivus, and then intracranially. Imaging also revealed aneurysmal dilatation of the basilar artery and infarctions in the cerebellum and subarachnoid haemorrhage. Despite aggressive antifungal treatment, the Patient died after 29 days. This case report describes the probable mechanism of fungal
Subclavian steal is a relatively common vascular phenomenon usually caused by atherosclerotic disease. While symptoms are rare, arm claudication of the ipsilateral limb is most common, with paroxysmal symptoms of vertebrobasilar insufficiency (often exercise induced) being relatively uncommon. Here we present a case of brachial artery embolism during mechanical thrombectomy for basilar artery thrombosis, secondary to subclavian steal phenomenon. This atypical and potentially irreversible complication should be considered in patients with acute ischemic stroke undergoing neurointerventional management when subclavian steal is discovered angiographically. ...
The role of the endothelium was examined in the response to aggregating platelets in cerebral arteries from normal and hypercholesterolemic animals. Male Yorkshire pigs were fed either a normal diet or a 2% high-cholesterol diet for 10 weeks. Endothelium-dependent responses were examined in vitro. In rings of basilar arteries from control animals aggregating platelets caused endothelium-dependent relaxations, which were significantly inhibited by apyrase, an adenosine diphosphatase and triphosphatase, but were augmented by methiothepin, a combined S1- and S2-serotonergic blocker. In quiescent rings platelets induced contractions that were inhibited by the presence of the endothelium; these contractions were significantly inhibited by methiothepin, but not by ketanserin (an S2-serotonergic blocker) or dazoxiben (a thromboxane-synthetase blocker) in the presence or absence of SQ29548 (a thromboxane-receptor blocker). Adenosine diphosphate but not serotonin caused endothelium-dependent relaxations. ...
GROSS: NERVOUS: Brain: Infarct: Gross fixed tissue horizontal section of hemispheres large infarct involving thalamus and occipital cortex due to basilar artery thrombosis - 00005231.jpg
Nagel S, Herweh C, Köhrmann M, Huttner HB, Poli S, Hartmann M, Hähnel S, Steiner T, Ringleb P, Hacke W. MRI in patients with acute basilar artery occlusion - DWI lesion scoring is an independent predictor of outcome. Int J Stroke. 2012 Jun;7(4):282-8. doi: 10.1111/j.1747-4949.2011.00705.x. Epub 2011 Dec 8. PubMed PMID: 22151607. Sykora M, Steiner T, Poli S, Rocco A, Turcani P, Diedler J. Autonomic effects of intraventricular extension in intracerebral hemorrhage. Neurocrit Care. 2012 Feb;16(1):102-8. doi: 10.1007/s12028-011-9637-1. PubMed PMID: 21976258. Sykora M, Diedler J, Poli S, Rizos T, Kellert L, Turcani P, Steiner T. Association of non-diabetic hyperglycemia with autonomic shift in acute ischaemic stroke. Eur J Neurol. 2012 Jan;19(1):84-90. doi:10.1111/j.1468-1331.2011.03438.x. Epub 2011 May 25. PubMed PMID: 21615627. Ferro JM, Crassard I, Coutinho JM, Canhão P, Barinagarrementeria F, Cucchiara B, Derex L, Lichy C, Masjuan J, Massaro A, Matamala G, Poli S, Saadatnia M, Stolz E, ...
References. Smith E, Delargy M. Locked-in syndrome. BMJ. 2005;330(7488):406‐409. doi:10.1136/bmj.330.7488.406. Buchman SL, Merkler AE. Basilar Artery Occlusion: Diagnosis and Acute Treatment. Curr Treat Options Neurol. 2019;21(10):45. Published 2019 Sep 26. doi:10.1007/s11940-019-0591-0. Meinel TR, Kaesmacher J, Chaloulos-Iakovidis P, et alMechanical thrombectomy for basilar artery occlusion: efficacy, outcomes, and futile recanalization in comparison with the anterior circulationJournal of NeuroInterventional Surgery 2019;11:1174-1180.. Summarized by Jackson Roos, MS4 , Edited by Erik Verzemnieks, MD. ...
The vertebral arteries are major arteries of the neck. They branch from the subclavian arteries and merge to form the single midline basilar artery in a complex called the vertebrobasilar system, which supplies blood to the posterior part of the circle of Willis and thus significant portions of the ...
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A 70-year-old lady came to us complaining of sudden onset of severe headache, which she described as the worst in her life on August 3, 2017. A CT Scan revealed subarachnoid hemorrhage (leaking of blood into the cerebro spinal fluid at the base of the brain). A cerebral angiography traced the leakage to a ballooning part of brain artery called basilar artery. The location of this ballooning (aneurysm) is so critical that open surgery is extremely difficult and has very high rate of complications. However, with an advanced endovascular intra operative angio-suite and special micro-devices (called catheters and coils) the leaking blood vessel was sealed and the ballooned blood vessel was packed with coils to ensure that it does not bleed again. A major operation was, therefore, avoided. The arrow in Picture A shows ballooning of the artery. The Picture B taken post the endovascular coiling operation shows that it is no longer filling with blood. The operation was difficult as an important artery, ...
The internal carotid arteries branch off the common carotid arteries in the neck just below the mandible. They give off no branches until meeting with the communicating branches of the basilar artery. The basilar artery is formed by the two vertebral arteries which arrive at the posterior of the brain via the vertebral column. Together the basilar and internal carotid arteries form the Circle of Willis, the primary vasular structure supplying blood to the brain. Blood from the internal carotids primarily goes to the frontal and temporal lobes. ...
We compared traditional steady-state experiments with nonsteady-state experiments in defining the vasodilating potency of isoflurane in isolated cerebral vessels. The effects of volatile anesthetics on isolated arterial vessel wall tension are typically examined by means of steady-state methodology. This requires the prolonged administration of the agent under study until a stable wall tension is achieved. An alternative, non-steady-state approach to such experiments is proposed as an adjunct technique to help simplify and in some cases evaluate more fully vascular response. Cylindrical segments of the rabbit basilar artery were placed into a perfused tissue bath, stretched to a resting tension of approximately 2000 dynes and then constricted with 30 nM K+. Thirty minutes later, 2.0 MAC of isoflurane was introduced into the fluid reservoir supplying the chamber. This administration was continued for 10 min, at which time isoflurane was discontinued and vessel tension was monitored for another 10 ...
Free, official coding info for 2018 ICD-10-CM I65.1 - includes detailed rules, notes, synonyms, ICD-9-CM conversion, index and annotation crosswalks, DRG grouping and more.
Dr. Waghmarae responded: Basilar migraine. What you did is good - but this is never preventative - they just merely reduce the likelihood of developing them. Also if you have them then doing what you did may help. Sometimes no matter how good you are - you still get the symptoms - the body is complicated.
The pontine arteries are comprised of tiny blood vessels that are part of the posterior cerebral circulation system. The pontine arteries are responsible for helping the body deliver oxygen-rich blood from the heart to the brain. The pontine arteries are located on both sides of the basilar artery. The basilar
Just like the watch later function on YouTube and Vimeo, any free-to-watch videos that you added to your playlist can be played here. To add a video to your playlist hover over the video and look for the clock-type icon. Click that and the video will be added to this list. Then you can pick the video you want to watch from your list of saved videos or hit the button below to auto-play all. To delete a video, over over the image and a trash can icon appears. Click that to delete from the playlist.. There arent any videos yet ...
The pontine branches are the small arterial branches of the basilar artery that supply the pons and structures adjacent to the pons. There are usually 3-5 paired arterial branches which are located in the mid-basilar region between the anterior ...
Until the development of the SuperBypass instrument series, our standard platform tipped forceps occasionally disturbed the flow of the procedures because the tip lacked a slip-resistant surface. Despite our standard forceps acceptable performance most of the time, many times I was forced to adjust the forceps grip on either the suture or the needle as I lost control of it.. By extending the platform length to 7mm and 10mm and changing the metallic chemistry of the tips we have created instruments with superior gripping ability. The SuperBypass forceps provides the ultimate control in procedures where manipulation of sutures within narrow and deep areas is also limited to single direction movement. We can now perform P2 bypass and basilar artery anastomosis using the long, straight SuperBypass instruments, while the bayonetted version further moderates the challenge of suturing in tight quarters under the surgical microscope.. Rokuya Tanikawa ...
Revision: 10766 http://supertuxkart.svn.sourceforge.net/supertuxkart/?rev=10766&view=rev Author: hikerstk Date: 2012-01-30 22:20:31 +0000 (Mon, 30 Jan 2012) Log Message: ----------- Moved terrain particle effectrs from kart into kart_gfx. Modified Paths: -------------- main/trunk/src/karts/kart.cpp main/trunk/src/karts/kart.hpp main/trunk/src/karts/kart_gfx.cpp main/trunk/src/karts/kart_gfx.hpp Modified: main/trunk/src/karts/kart.cpp =================================================================== --- main/trunk/src/karts/kart.cpp 2012-01-30 22:14:34 UTC (rev 10765) +++ main/trunk/src/karts/kart.cpp 2012-01-30 22:20:31 UTC (rev 10766) @@ -93,14 +93,12 @@ m_race_position = position; m_collected_energy = 0; m_finished_race = false; - m_wheel_toggle = 1; m_finish_time = 0.0f; m_bubblegum_time = 0.0f; m_invulnerable_time = 0.0f; m_squash_time = 0.0f; m_shadow_enabled = false; m_shadow = NULL; - m_terrain_particles = NULL; m_collision_particles = NULL; m_slipstream = NULL; m_skidmarks = NULL; @@ ...
i followed your advice for the sata driver, after many hours of searching i have found the sata driver for the above hard drive (what a nightmare) but had to slipstream the sata driver with a copy of windows xp as i could not instal the driver any other way as i had no floppy drive & it would not work on a usb stick,but i now have a second hand laptop that is running very nicely ...
More specifically, cases with damage to the basilar artery, the carotid artery and the vertebral artery have been reported. ... Rajasekharan, Chandrasekharan (2013). "Basilar artery thrombosis due to head banging: hazard of a religious ritual". BMJ Case ... Edvardsson, Bengt (7 Jul 2011). "Head banging associated with basilar artery thrombosis". Neurology India. 59 (3): 478-9. doi: ... Egnor, M.R. (1991/1992). (1991). "Vertebral Artery Aneurysm - A Unique Hazard of Head Banging by Heavy Metal Rockers". ...
Posterior to the clivus is the basilar artery. The pons sits on the clivus. Clivus is also used as an abbreviated term for the ... It forms a gradual sloping process at the anterior most portion of the basilar occipital bone at its junction with the sphenoid ... Just lateral to the clivus bilaterally is the foramen lacerum (the internal carotid artery reaches the middle cranial fossa ...
No canal in basioccipital or basispehnoid for basilar artery. Suprastapedial process of quadrate moderately large, distally ...
From the basilar artery are two posterior cerebral arteries. Branches of the basilar and PCA supply the occipital lobe, brain ... The internal carotid artery becomes the anterior cerebral artery and the middle central artery. The ACA transmits blood to the ... The carotid arteries cover the majority of the cerebrum. The common carotid artery divides into the internal and the external ... Dissections within the carotid arteries or vertebral arteries may compromise blood flow to the brain due to thrombosis, and ...
"Neuro Case 1 - Using Transcranial Doppler for Basilar Artery Occlusion". The Beacon News. Archived from the original on March 8 ...
"Morphological changes in normal canine basilar arteries after transluminal angioplasty". Neurological Research. 12 (1): 12-6. ...
The arteries of the base of the brain. Basilar artery labeled below center. The temporal pole of the cerebrum and the ... The right and left posterior cerebral arteries arise from the basilar artery, which is formed by the left and right vertebral ... Origin of arteries[edit]. The left and right internal carotid arteries arise from the left and right common carotid arteries. ... The vertebral arteries arise from the subclavian arteries. The anterior communicating artery connects the two anterior cerebral ...
He suffered a basilar skull fracture, damaged his carotid artery and sinus. He recovered and returned to race the entire 2000 ...
Canal or deep groove in floor of basioccipital and basispehnoid for basilar artery. Suprastapedial process of quadrate large, ...
No canal or groove in floor of basioccipital or basisphenoid for basilar artery. Suprastapedial process of quadrate distally ...
... one or more of these three metabolites are implicated in the vasodilation of rat basilar artery, 12(R)-HETE and to a slightly ... "Arachidonate dilates basilar artery by lipoxygenase-dependent mechanism and activation of K(+) channels". American Journal of ... Ma, Y. H.; Harder, D. R.; Clark, J. E.; Roman, R. J. (1991). "Effects of 12-HETE on isolated dog renal arcuate arteries". The ... This antagonistic activity was responsible for the ability of 12(S)-HETE and 12(R)-HETE to relax mouse mesenteric arteries pre- ...
Flügel KA, Fuchs HH, Druschky KF (1977). "The "locked-in" syndrome: pseudocoma in thrombosis of the basilar artery (author's ... usually of the basilar artery[citation needed] Traumatic brain injury[citation needed] Result from lesion of the brain-stem ...
... results from occlusion of paramedian branches of the basilar artery. Alternating hemiplegia of ...
... possesses vasodilating actions on the guinea-pig basilar artery". J. Pharmacol. Exp. Ther. 235 (3): 757-63. PMID 3935775. Inoue ... "Mechanisms of action of eperisone on isolated dog saphenous arteries and veins". Jpn. J. Pharmacol. 50 (3): 271-82. doi:10.1254 ...
Delasobera, BE; Osborn, SR; Davis, JE (2012). "Thunderclap headache with orgasm: A case of basilar artery dissection associated ... Mauri, G; Vega, P; Murias, E; Vega, J; Ramón, C; Pascual, J (2012). "Fusiform aneurysms of the vertebral artery: A hidden cause ...
Basilar artery dissection has also been reported in connection with sexual activity, though most coital cephalalgia is benign ... A Case of Basilar Artery Dissection Associated with Sexual Intercourse". The Journal of Emergency Medicine. 43 (1): e43-e47. ... An Atlanta Police Department officer died in 2009 from atheroschlerotic coronary artery disease while engaged in a threesome. ... and the physical activity of sexual intercourse in patients with coronary artery disease can result in myocardial ischemia. The ...
On April 7, 2008, Haynes was diagnosed with a brain aneurysm of his basilar artery. He successfully underwent surgery for the ...
On April 7, 2008, Haynes was diagnosed with a brain aneurysm of his basilar artery. He successfully underwent surgery for the ...
There is a deep groove present in the floor of the basioccipital for the basilar artery. The suprastapedial process is fused to ...
... a groove for the basilar artery. Most of the pons is supplied by the pontine arteries, which arise from the basilar artery. A ... The pons can be broadly divided into two parts: the basilar part of the pons (ventral pons), and the pontine tegmentum (dorsal ... smaller portion of the pons is supplied by the anterior and posterior inferior cerebellar arteries. The pons in humans measures ... pons). Running down the midline of the ventral surface is the basilar sulcus, ...
... is caused by blockage of the long circumferential branches of the basilar artery. It was described by ...
It transmits the facial and acoustic nerves and the internal auditory branch of the basilar artery. The lateral end of the ... is received into the angular interval between the posterior border of the great wing of the sphenoid bone and the basilar part ... for the passage of the greater petrosal nerve and for the petrosal branch of the middle meningeal artery lateral to the hiatus ... it transmits into the cranium the internal carotid artery, and the carotid plexus of nerves medial to the opening for the ...
The plexus on the vertebral artery is continued on to the basilar, posterior cerebral, and cerebellar arteries. The plexus on ... the inferior thyroid artery accompanies the artery to the thyroid gland, and communicates with the recurrent and external ... on the medial side of the costocervical artery. Its form is irregular; it is larger in size than the middle cervical ganglion, ... one of which forms a loop around the subclavian artery and supplies offsets to it. This loop is named the ansa subclavia ( ...
By preventing the release of Ca2+, lomerizine prevents serotonin-induced contraction of the basilar artery, which can lead to ... This is hypothesized to be due to the drug's selectivity for cerebral arteries over peripheral arteries. No other side effects ... on serotonin-induced contraction of the basilar artery". Journal of Pharmacological Sciences. 111 (2): 221-5. doi:10.1254/jphs. ...
Originally the terms basilar artery migraine or basilar migraine were used but, since involvement of the basilar artery is ... basilar artery migraine; basilar migraine; basilar-type migraine) is a subtype of migraine with aura in which symptoms clearly ... Basilar migraine can present tingling and numbness, but true motor weakness and paralysis occur only in hemiplegic migraine. ... Effecting a differential diagnosis between basilar migraine and hemiplegic migraine is difficult. Often, the decisive symptom ...
... suffered a Basilar Artery Stroke in August 2017, and passed away on September 1, 2017. His funeral was held at ...
Most commonly affected are the vertebral and basilar arteries (Vertebral Basilar Dolichoectasia or Vertebrobasillar ... In cases involving the basilar artery (VBD), pathology can occur due to direct compression of cranial nerves, by ischemia ... Seen in an MRI as two individual arteries at this hairpin, a carotid artery dolichoectasia can progress so far as to produce a ... Internal carotid artery dolichoectasia is particularly interesting because the artery normally already contains one hairpin ...
On March 22, 1983, Paul Brophy sustained a basilar artery aneurysm rupture with very destructive neurologic consequences. ...
The main supply of blood to the brainstem is provided by the basilar arteries and the vertebral arteries. The human brainstem ...
It can result from occlusion of the posterior cerebral artery or paramedian penetrating branches of the basilar artery. ... syndromes arising from posterior cerebral artery branch occlusion". Journal of the Neurological Sciences. 228 (1): 105-107. doi ...
Basilar artery. The basilar artery lies at the front of the brainstem in the midline and is formed from the union of the two ... The basilar artery (/ˈbæz.ɪ.lər/)[1][2] is one of the arteries that supplies the brain with oxygen-rich blood. ... "basilar - WordReference.com Dictionary of English". www.wordreference.com.. *^ Jones, Jeremy. "Basilar artery , Radiology ... The basilar artery arises from the union of the two vertebral arteries at the junction between the medulla oblongata and the ...
Acute basilar artery thrombosis is associated with a poor prognosis. However, the advent of high-quality, reliable, and ... encoded search term (Basilar%20Artery%20Thrombosis) and Basilar Artery Thrombosis What to Read Next on Medscape. Medscape ... Right vertebral artery angiography showing an occlusion with no flow in the basilar artery. ... Basilar Artery Thrombosis Differential Diagnoses. Updated: Oct 18, 2017 * Author: Salvador Cruz-Flores, MD, MPH, FAHA, FCCM, ...
... basilar artery thrombosis may manifest in at least these 3 different ways, as follows: Sudden onset of severe motor and bulbar ... Drugs & Diseases , Neurology , Basilar Artery Thrombosis Q&A What are the clinical manifestations of basilar artery thrombosis? ... Right vertebral artery angiography showing an occlusion with no flow in the basilar artery. ... Occlusion of the basilar artery. A review with 17 personal cases (authors transl)]. Rev Neurol (Paris). 1981. 137(10):545-71. ...
It is formed where the two vertebral arteries join at the base of the skull. The basilar artery carries oxygenated blood to the ... The basilar artery is part of the blood supply system for the brain and central nervous system. ...
Acute basilar artery thrombosis is associated with a poor prognosis. However, the advent of high-quality, reliable, and ... encoded search term (Basilar Artery Thrombosis) and Basilar Artery Thrombosis What to Read Next on Medscape. Related Conditions ... The recognized syndromes more commonly associated with basilar artery occlusion are locked-in syndrome and top-of-the-basilar ... Right vertebral artery angiography showing an occlusion with no flow in the basilar artery. ...
... like stenosis of any other intracranial artery, is more frequent in the African American and Asian populations than in white ... Drugs & Diseases , Neurology , Basilar Artery Thrombosis Q&A Which patient groups have the highest prevalence of basilar artery ... Atherosclerotic basilar artery stenosis, like stenosis of any other intracranial artery, is more frequent in the African ... Right vertebral artery angiography showing an occlusion with no flow in the basilar artery. ...
People with a basilar artery migraine typically experience a... ... Common basilar artery migraine symptoms include cold feet and ... People with a basilar artery migraine typically experience a minimum of two of the following symptoms: slurred speech, loss of ... A person who has a minimum of two attacks with at least two auras each is diagnosed as having a basilar artery migraine, ... Common basilar artery migraine symptoms include cold feet and hands, light and sound sensitivity, nausea and vomiting, ...
Its formed when two vertebral arteries conjoin. It gives blood to the inner ear and parts of the bra... ... This artery is located at the bottom of the skull. ... basilar posterior cerebral artery (thing). See all of basilar ... Related: basilar plexus. These are a network of small arteries between layers of the dura mater around the base of the skull. ... This artery is located at the bottom of the skull. Its formed when two vertebral arteries conjoin. It gives blood to the inner ...
Basilar Artery Thrombosis Basilar Artery Embolism Stroke of Basilar Artery Stroke Cerebrovascular Disorders Other: Intra- ... Outcomes of basilar artery occlusion in patients aged 75 years or older in the Basilar Artery International Cooperation Study. ... Acute basilar artery occlusion in the Basilar Artery International Cooperation Study: does gender matter? Stroke. 2010 Nov;41( ... Symptoms and signs compatible with ischemia in the basilar artery territory.. *Basilar artery occlusion (BAO) confirmed by CTA ...
Basilar artery occlusion and the dense artery sign in the newborn.. Bodensteiner JB1, Reitter BF, Sheth RD. ... artery at the tip of the basilar artery. The pattern of cerebral damage on MRI scan at 10 years of age confirmed the site of ... A child with basilar artery occlusion in the neonatal period is reported. The occlusion was documented by unenhanced computed ... The clinical features of basilar artery occlusion as seen in the adult are not apparent in the neonate. Recognition of the ...
Home » Professionals » Stroke Diagnosis » Neuropathology Image Library » Aneurysm of Basilar Artery Aneurysm of Basilar Artery ... Over 90% of aneurysms occur in the circle of Willis and in the proximal middle cerebral artery. An aneurysm is caused by a ... Most aneurysms occur at the bifurcation of large cerebral arteries. ...
This project is supported by the Canadian Institutes of Health Research (award #111062), Alberta Innovates - Health Solutions, and by The Metabolomics Innovation Centre (TMIC), a nationally-funded research and core facility that supports a wide range of cutting-edge metabolomic studies. TMIC is funded by Genome Alberta, Genome British Columbia, and Genome Canada, a not-for-profit organization that is leading Canadas national genomics strategy with funding from the federal government. Maintenance, support, and commercial licensing is provided by OMx Personal Health Analytics, Inc. Designed by Educe Design & Innovation Inc. ...
Acute Basilar Artery Occlusion. Jill L. Ostrem, Jeffrey L. Saver, Jeffry R. Alger, Sidney Starkman, Megan C. Leary, Gary ... Acute Basilar Artery Occlusion. Jill L. Ostrem, Jeffrey L. Saver, Jeffry R. Alger, Sidney Starkman, Megan C. Leary, Gary ... Acute basilar artery occlusion can lead to substantial morbidity and mortality, estimated to be 80% to 90% in patients treated ... Acute Basilar Artery Occlusion. Diffusion-Perfusion MRI Characterization of Tissue Salvage in Patients Receiving Intra-Arterial ...
Relaxation effect of abacavir on rat basilar arteries.. [Rachel Wai Sum Li, Cui Yang, Shun Wan Chan, Maggie Pui Man Hoi, Simon ... The relaxation effect of abacavir on rat basilar arteries was studied using the myograph technique. Cyclic GMP and AMP levels ... Abacavir also increased the cGMP level in rat basilar arteries. Abacavir-induced relaxation was also abolished by adenosine A2 ... Short-term and long-term treatment of abacavir did not affect acetylcholine-induced relaxation in rat basilar arteries. ...
The basilar artery (middle of figure) arises from the vertebral arteries and terminates when it bifurcates in the left and ... In human anatomy, the basilar artery is one of the arteries that supplies the brain with oxygen-rich blood. ... From the basilar artery arises the superior inferior cerebellar artery (supplying the superior and inferior aspects of the ... vertebral artery. meningeal - spinal (posterior, anterior) - cerebellar (PICA). basilar: pontine - labyrinthine - cerebellar ( ...
... basilar artery include Ferric Chloride-induced Canine Carotid Artery Thrombosis: A Large Animal Model of Vascular Injury, ... Effects of Blast-induced Neurotrauma on Pressurized Rodent Middle Cerebral Arteries, Evaluation of Vascular Control ... Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats, Comprehensive Endovascular and Open Surgical ... Ferric Chloride-induced Canine Carotid Artery Thrombosis: A Large Animal Model of Vascular Injury. Authors ...
As a result of its secure location, injury to the basilar artery is rare.1 Only 10% of traumatic aneurysms in the brain occur ... Traumatic Pseudoaneurysm of the Basilar Artery. McElroy, Kevin M. DO; Malone, Richard J. DO; Freitag, Warren B. MD; Keller, ... 4. Quintana F, Diez C, Gutierrez A, Diez ML, Austin O, Vazquez A: Traumatic aneurysm of the basilar artery. Am J Neuroradiol ... 1. Bank WO, Nelson PB, Drayer BP, Wilkins RH, Rosenbaum AE: Traumatic aneurysm of the basilar artery. AJR Am J Roentgenol 1978; ...
A review of the literature focused on basilar artery pathology is very limited and only includes cases of basilar artery ... a basilar artery transection. The basilar artery transection is extensively evaluated in our case with radiology and pathology ... Basilar artery transection after closed head trauma. By Zachary S. Rost, MD; Jason Schroeder, MD; and Mark Buehler, MD ... Basilar artery transection and skull base fracture following closed head trauma. DISCUSSION. The unfortunate case described ...
Basilar artery migraine and reversible imaging abnormalities. Message Subject (Your Name) has sent you a message from American ... Basilar artery migraine and reversible imaging abnormalities.. J Maytal, R B Libman and E S Lustrin ... We report a case of a basilar artery migraine in a 17-year-old boy with transient CT and MR abnormalities after each of two ...
... and outcome in a multiethnic population of stroke survivors with basilar artery occlusive disease (BAOC). METHODS: Forty ... patients with infarcts in the basilar artery (BA) territory, alive 30 da ... Forty patients with infarcts in the basilar artery (BA) territory, alive 30 days after the ictus, participated in the study. BA ... and outcome in a multiethnic population of stroke survivors with basilar artery occlusive disease (BAOC). METHODS: ...
What is basilar artery occlusion? Meaning of basilar artery occlusion medical term. What does basilar artery occlusion mean? ... Looking for online definition of basilar artery occlusion in the Medical Dictionary? basilar artery occlusion explanation free ... basilar artery occlusion. basilar artery occlusion. an obstruction of the basilar artery, resulting in dysfunction involving ... A review of the literature focused on basilar artery pathology is very limited and only includes cases of basilar artery ...
Basilar artery occlusion is one of the most devastating neurological conditions known to man. Though rare, patients with ... Endovascular revascularization for basilar artery occlusion Interv Neurol. 2015 Jan;3(1):31-40. doi: 10.1159/000368968. ... Basilar artery occlusion is one of the most devastating neurological conditions known to man. Though rare, patients with ... In this review, we examine the approaches to stroke syndromes due to basilar artery thrombosis. We share the relevant data for ...
Options for Recanalization Therapy in Basilar Artery Occlusion. Perttu J. Lindsberg, Lauri Soinne, Risto O. Roine, Turgut ... Options for Recanalization Therapy in Basilar Artery Occlusion. Perttu J. Lindsberg, Lauri Soinne, Risto O. Roine and Turgut ... Options for Recanalization Therapy in Basilar Artery Occlusion. Perttu J. Lindsberg, Lauri Soinne, Risto O. Roine and Turgut ... Basilar artery occlusion (BAO) is a relatively infrequent but catastrophic disease with dismal natural course, carrying 85% to ...
A 65-year-old female developed peduncular hallucinosis 3 days after rupture of a basilar-superior cerebellar artery aneurysm. ... Basilar Artery. Cerebellum / blood supply. Female. Hallucinations / etiology*. Humans. Intracranial Aneurysm / complications*, ... A 65-year-old female developed peduncular hallucinosis 3 days after rupture of a basilar-superior cerebellar artery aneurysm. ... Vasospasm of the perforating arteries to the upper brainstem, rather than direct brainstem damage caused by the bleeding, was ...
b,I am a 22 years old male suffering from basilar artery migraine for the past two years.,/b, I feel terribly confused before ... How can basilar artery migraine be treated?. Answered by: Dr Debashish Chowdhury , Professor of Neurology,. GB Pant Hospital, ... Q: I am a 22 years old male suffering from basilar artery migraine for the past two years. I feel terribly confused before ... How can basilar artery migraine be treated?. A:You have bad headaches. The headaches are preceded by confusional state and ...
The Basilar Artery on Computed Tomography Angiography Prognostic Score for Basilar Artery Occlusion.. [Fana Alemseged, Darshan ... Basilar artery occlusion is associated with high risk of disability and mortality. This study aimed to assess the prognostic ... A retrospective analysis of consecutive stroke patients with basilar artery occlusion diagnosed on computed tomographic ... the Basilar Artery on Computed Tomography Angiography (BATMAN) score. ...
Keywords : nervo troclear; dolicoectasia; artéria basilar; oftalmoplegia; compressão. · abstract in English · text in English ... Os exames de ressonância magnética e angioressonância evidenciaram dolicoectasia da artéria basilar, que comprimia a face ... Paresia isolada do nervo patético por compressão da artéria basilar dolicoectásica: relato de caso. Arq. Neuro-Psiquiatr. [ ...
Fenestrations or "windows" within the basilar artery occur as a result of failure of fusion of the neural arteries and of ... Fusion of the embryonic longitudinal neural arteries into a single basilar artery occurs in a craniocaudal direction (8) by ... Complete duplication of the basilar artery, with each vertebral artery continuing separately to form a posterior cerebral ... This case illustrates complete duplication or extreme fenestration of the basilar artery, with each vertebral artery ...
ICD-9 code 433.01 for Occlusion and stenosis of basilar artery with cerebral infarction is a medical classification as listed ... Occlusion and stenosis of basilar artery with cerebral infarction (433.01). ICD-9 code 433.01 for Occlusion and stenosis of ... basilar artery with cerebral infarction is a medical classification as listed by WHO under the range -CEREBROVASCULAR DISEASE ( ...
  • Davis SM, Donnan GA. Basilar artery thrombosis: recanalization is the key. (medscape.com)
  • Cross-sectional imaging for diagnosis and clinical outcome prediction of acute basilar artery thrombosis. (medscape.com)
  • Usefulness of CT Angiography for Therapeutic Decision Making in Thrombolyzing Intubated Patients with Suspected Basilar Artery Thrombosis. (medscape.com)
  • What are the clinical manifestations of basilar artery thrombosis? (medscape.com)
  • Which patient groups have the highest prevalence of basilar artery thrombosis? (medscape.com)
  • The male-to-female ratio for basilar artery thrombosis is 2:1. (medscape.com)
  • Neonatal arterial thrombosis involving the carotid circulation has been well documented and may be due to many pathological factors including direct trauma to the carotid artery and embolization from remote sites. (nih.gov)
  • Thrombosis of the vertebral artery in the neonate is only rarely reported and only in association with significant cervical trauma. (nih.gov)
  • Thrombosis of the basilar artery can be life-threatening, as it leads to hypoxia and ischemia of the brainstem . (wikidoc.org)
  • In this review, we examine the approaches to stroke syndromes due to basilar artery thrombosis. (nih.gov)
  • Dear Editor, I would like to present a case of a 20-year-old pregnant patient with basilar artery thrombosis and our struggle to establish its aetiology in this particular patient. (termedia.pl)
  • At 3 PM it hit me--I needed exhibits of a tracheostomy, a coronary artery bypass and a deep vein thrombosis--all in time for a for-trial video deposition the next day. (doereport.com)
  • Thrombosis or occlusion of the basilar artery can lead to neurologic impairment that can include problems with vision, impaired movement of the eyes and loss of movement. (news-medical.net)
  • However, basilar artery thrombosis is an acute event representing a life-threatening emergency. (news-medical.net)
  • Angiography is used to diagnose basilar artery thrombosis. (news-medical.net)
  • Hyperdense basilar artery sign is a sign of basilar artery thrombosis or embolism that predicts basilar territory infarction [2]. (imagejournals.org)
  • Brain CT showed hyper-dense signal change in the basilar artery indicative of basilar artery thrombosis and pons infarction (Figure 1a and 1b). (imagejournals.org)
  • Introduction and purpose Symptomatic acute basilar thrombosis is associated with a high mortality rate. (bmj.com)
  • However, basilar thrombosis continues to be a devastating illness, with one-third of the patients in this series dying of progressive infarction despite angiographic patency of the large conduit vessels with technical complications. (bmj.com)
  • We postulate that a severe reduction in blood flow and possibly an intimal tear triggered thrombosis of the vertebral artery and that the final stroke mechanism was artery-to-artery embolism. (hku.hk)
  • I63.02 is a billable ICD code used to specify a diagnosis of cerebral infarction due to thrombosis of basilar artery. (icd.codes)
  • The basilar artery lies at the front of the brainstem in the midline and is formed from the union of the two vertebral arteries . (wikipedia.org)
  • This is the manifestation of upper brainstem and diencephalic ischemia caused by occlusion of the rostral basilar artery, usually by an embolus. (medscape.com)
  • Vasospasm of the perforating arteries to the upper brainstem, rather than direct brainstem damage caused by the bleeding, was probably the cause. (biomedsearch.com)
  • The basilar artery runs along the pons of the brainstem. (sciencephoto.com)
  • BACKGROUND: Signs of brainstem ischemia in children may be subtle, and outcome following basilar artery occlusion is often poor. (luriechildrens.org)
  • Delayed intra-arterial thrombolysis and vertebral artery coiling can be successfully used to treat basilar artery occlusion and prevent the recurrence of brainstem ischemia in children. (luriechildrens.org)
  • Conclusion In comatose patients with basilar artery occlusion, the extent of brainstem ischemia appears to be related to mortality but not to favourable outcome. (uni-regensburg.de)
  • It provides arterial supply to the brainstem, cerebellum, and contributes to the posterior circulation through the posterior cerebral arteries. (statpearls.com)
  • Basilar artery refers to artery formed from a joining of the two (2) vertebral arteries at the level of the brainstem. (psychology-lexicon.com)
  • The basilar artery then ascends ventrally on the brainstem and terminates by dividing into the posterior cerebral arteries . (anatomyzone.com)
  • Basilar Artery Migraines : Causes, Symptoms, Tests, and Treatments When someone has a basilar migraine , there is a disturbance at the brainstem or base of the brain. (savedwebhistory.org)
  • Basilar artery migraines : Causes, symptoms, tests and treatments Basilar artery migraine is caused by a blood vessel at the base of the brainstem going into spasm and reducing blood flow to the brain. (savedwebhistory.org)
  • Defined by the coexistence of migraine headache with neurological symptoms emanating from either the brainstem or simultaneously from both cerebral hemispheres, basilar-type migraine has been categorized as "atypical" or "complicated" and has been considered more akin to hemiplegic migraine than to migraine with typical aura. (springer.com)
  • The state is a result of a trouble of the basilar artery that is seen in the brainstem. (naturalcurefor.com)
  • At the junction where the two vertebral arteries unite, the vertebrobasilar system ascends to the brainstem and the lower part of the cerebrum. (psychologydictionary.org)
  • The basilar pons makes up two thirds of the pons within the brainstem. (wikipedia.org)
  • It has a ridged appearance with a shallow groove at the midline This groove is called the basilar sulcus and is covered by the basilar artery, which feeds into the Circle of Willis and provides blood supply to the brainstem and cerebellum. (wikipedia.org)
  • In addition to passing through the basilar pons, corticospinal tract fibers go through other structures of the brainstem, such as the internal capsule and the crus cerebri. (wikipedia.org)
  • Extent of hypoattenuation on CT angiography source images predicts functional outcome in patients with basilar artery occlusion. (medscape.com)
  • Patients were included in the current analysis if (1) they presented with symptoms of posterior circulation ischemia, (2) acute basilar artery occlusion was identified at angiography, (3) intra-arterial thrombolytic therapy was administered, and (4) an MRI, including a DWI sequence, was performed before treatment. (ahajournals.org)
  • Computed tomographic angiography revealed a 6.2 × 5 × 5.1-mm pseudoaneurysm at the tip of the basilar artery ( Fig. 2 ). (lww.com)
  • The Basilar Artery on Computed Tomography Angiography Prognostic Score for Basilar Artery Occlusion. (sigmaaldrich.com)
  • This study aimed to assess the prognostic value of a new radiological score: the Basilar Artery on Computed Tomography Angiography (BATMAN) score. (sigmaaldrich.com)
  • A retrospective analysis of consecutive stroke patients with basilar artery occlusion diagnosed on computed tomographic angiography was performed. (sigmaaldrich.com)
  • We present a case of complete duplication or extreme fenestration of the basilar artery demonstrated by catheter digital subtraction angiography (DSA). (ajnr.org)
  • Cerebral angiography showed the left vertebral artery as arising from the aortic arch and giving origin to the thyrocervical trunk in its cervical course. (ajnr.org)
  • Basilar artery fenestrations detected by MR angiography. (radiopaedia.org)
  • A 70-year-old asymptomatic man presented with moyamoya disease (MMD)-associated basilar tip aneurysm (BTA) noted on digital subtraction angiography ( figure 1, A-D ). 4D-flow MRI revealed a concentrated inflow jet with high velocity compared with previous studies 1 ( video 1 and figure 2, A-F ). Considering the high risk of endovascular treatment, the patient chose conservative treatment. (neurology.org)
  • Non-invasive imaging investigation demonstrated an eccentric basilar trunk aneurysm which was further evaluated with catheter angiography ( figure 1 ). (bmj.com)
  • Aims We sought to assess whether the posterior circulation Acute Stroke Prognosis Early CT Score and the Pons-Midbrain Index applied to CT angiography source images predict the outcome of comatose patients in the Basilar Artery International Cooperation Study. (uni-regensburg.de)
  • We applied posterior circulation Acute Stroke Prognosis Early CT Score and Pons-Midbrain Index to CT angiography source images of Basilar Artery International Cooperation Study patients who presented with coma. (uni-regensburg.de)
  • Results Of 619 patients in the Basilar Artery International Cooperation Study registry, CT angiography source images were available for review in 158 patients. (uni-regensburg.de)
  • CT angiography and measurement of basilar artery diameter were performed at days 0 and 3 after SAH. (surgicalneurologyint.com)
  • 4. Cademartiri F, Stojanov D, Dippel DW, Van Der Lugt A, Tanghe H. Noninvasive detection of a ruptured aneurysm at a basilar artery fenestration with submillimeter multisection CT angiography. (radiopaedia.org)
  • Cerebral angiography revealed a dissecting aneurysm of the basilar artery. (jkna.org)
  • On angiography, her basilar artery was filled with intraluminal clot while the vertebral arteries were normal. (hku.hk)
  • Finally, magnetic resonance imaging and digital subtraction angiography revealed basilar artery dissection and vertebrobasilar dolichoectasia. (myneuronews.com)
  • Pontine arteries , anterior inferior cerebellar (AICA) and superior cerebellar arteries , and terminal posterior cerebral arteries. (wikipedia.org)
  • It ascends in the central gutter (sulcus basilaris) inferior to the pons and divides into the posterior cerebral arteries and the superior cerebellar artery just inferior to the pituitary stalk. (wikidoc.org)
  • From the basilar artery arises the superior inferior cerebellar artery (supplying the superior and inferior aspects of the cerebellum ), as well as smaller branches for the supply of the pons (the pontine branches). (wikidoc.org)
  • an obstruction of the basilar artery, resulting in dysfunction involving cranial nerves III through XII, cerebellar dysfunction, hemiplegia or tetraplegia, and loss of proprioception. (thefreedictionary.com)
  • Peduncular hallucinosis associated with ruptured basilar-superior cerebellar artery aneurysm--case report. (biomedsearch.com)
  • A 65-year-old female developed peduncular hallucinosis 3 days after rupture of a basilar-superior cerebellar artery aneurysm. (biomedsearch.com)
  • Although the ipsilateral posterior cerebral, superior, anterior inferior, and posterior inferior cerebellar arteries were present and normal, their contralateral counterparts were not identified ( Fig 1A ), with the exception of transient opacification of the right superior cerebellar artery via a small communicating branch. (ajnr.org)
  • The log-rank test showed male sex, migraine, basilar extension and the posterior inferior cerebellar artery involvement were associated with the progression. (bmj.com)
  • Multivariate analysis using the Cox proportional hazards model showed that only basilar extension and the posterior inferior cerebellar artery involvement were significantly related to the progression (p=0.012 and 0.019). (bmj.com)
  • Although all unruptured siVAD patients should be closely monitored, those with basilar extension and posterior inferior cerebellar artery involvement should perhaps be more carefully followed than those without such morphologies. (bmj.com)
  • Computed tomography (CT) revealed a 9 mm thrombus in the basilar artery and signs of left cerebellar hemisphere ischaemia. (termedia.pl)
  • Such an evaluation has not been previously described in the literature.METHODS:Patient records for 77 basilar tip aneurysm cases and 28 basilar superior cerebellar artery aneurysm cases treated between 1981 and 1997 were reviewed. (deepdyve.com)
  • Clinical and radiological parameters were separately analyzed using the χ2 test, and then multiple-regression analysis was used.RESULTS:Postoperative oculomotor palsy occurred in 25 (32%) patients with basilar tip aneurysms and 11 (39%) patients with basilar superior cerebellar artery aneurysms, in addition to 2 patients with basilar tip aneurysms and 3 patients with basilar superior cerebellar artery aneurysms who exhibited oculomotor palsy before surgery. (deepdyve.com)
  • The proximal superior cerebellar artery (pSCA) is often considered a perforator-free area. (ovid.com)
  • Although the pSCA territories likely overlap with the posterior cerebral artery, BA, and anterior inferior cerebellar artery, the pSCA segment cannot be surgically manipulated with impunity. (ovid.com)
  • The basilar artery measured 4.8 mm at the level of the right anterior inferior cerebellar artery, 4.2 mm at the terminus proximal to the posterior cerebral arteries, and 2.8 mm at the left posterior cerebral artery in the mid-P1 segment. (bmj.com)
  • Clinical manifestations of basilar artery pathology include an impaired level of consciousness, cranial nerve deficits, cerebellar dysfunctions, and motor and sensory dysfunction. (statpearls.com)
  • The paired anterior inferior cerebellar arteries (AICA) branch from the basilar artery inferiorly. (statpearls.com)
  • The posterior inferior cerebellar arteries originate from the vertebral arteries. (statpearls.com)
  • The paired superior cerebellar arteries branch from the basilar artery more superiorly, just prior to the terminal branching of the basilar artery into the right and left posterior cerebral arteries. (statpearls.com)
  • The superior cerebellar arteries supply the superior aspect of the cerebellum, as the name would suggest. (statpearls.com)
  • The posterior inferior cerebellar artery, which is typically a branch of the vertebral artery, may arise from the basilar artery in about 10% of cases. (statpearls.com)
  • Aneurysm rupture results in subarachnoid hemorrhage (SAH) with subsequent vasospasm in the cerebral and cerebellar major arteries. (surgicalneurologyint.com)
  • the anterior inferior cerebellar artery (supplying the inferior and middle cerebellar peduncles of the cerebellum ) and the adjacent hemisphere). (turkcewiki.org)
  • It is the smallest of the three cerebellar arteries. (europeanmedical.info)
  • CT brain scan showed small cerebellar infarcts and hyperdensity of the basilar artery with CT angiogram revealing distal BAO (Figure 1). (medcraveonline.com)
  • Atherosclerotic basilar artery stenosis, like stenosis of any other intracranial artery, is more frequent in the African American and Asian populations than in white populations. (medscape.com)
  • A case report of intracranial vertebral-basilar artery hypoplasia presenting with episodic dizziness. (radiopaedia.org)
  • Stent placement in acute cerebral artery occlusion: use of a self-expandable intracranial stent for acute stroke treatment. (cns.org)
  • Treatment and outcomes of acute intracranial vertebrobasilar artery occlusion: one institution's experience. (cns.org)
  • Segmental mediolytic arteriopathy" or "segmental arterial mediolysis" (SAM) is an idiopathic disorder of visceral and intracranial arteries and known as a cause of major abdominal, retroperitoneal, and subarachnoid hemorrhage (SAH). (springer.com)
  • This is the case of a patient with simultaneously ruptured dissecting aneurysms of abdominal and intracranial arteries. (springer.com)
  • Fuse T, Takagi T, Yamada K, Fukushima T. Systemic multiple aneurysms of the intracranial arteries and visceral arteries: case report. (springer.com)
  • Kubo S, Nakagawa H, Imaoka S. Systemic multiple aneurysms of the extracranial internal carotid artery, intracranial vertebral artery, and visceral arteries: case report. (springer.com)
  • Ro A, Kageyama N, Takatsu A, Fukunaga T. Segmental arterial mediolysis of varying phases affecting both the intra-abdominal and intracranial vertebral arteries: an autopsy case report. (springer.com)
  • Deliberate basilar or vertebral artery occlusion in the treatment of intracranial aneurysms. (semanticscholar.org)
  • The interior carotid artery , whose intracranial section is recreated from the rostral supraduralis rete mirabile ( rete mirabile epidurale rostrale) , having passed the dura mater, it bifurcates into the rostral cerebral artery ( a.cerebri rostralis - fig. 1-2 ) and the caudal communicating artery ( a. communicans caudalis) . (media.pl)
  • Symptomatic intracranial involvement of vertebral and basilar arteries by atherosclerosis is not accessible to surgical treatment. (docphin.com)
  • Introduction Basilar fenestration aneurysms are rare, challenging intracranial vascular lesions with atypical anatomy. (bmj.com)
  • Basilar artery fenestration (or more simply, basilar fenestration ) is the most common intracranial arterial fenestration . (radiopaedia.org)
  • Coma associated with oculomotor abnormalities and quadriplegia also indicates proximal basilar and midbasilar occlusive disease with pontine ischemia. (medscape.com)
  • The postulate mechanism is the plaque in the basilar artery at the orifice of the branch to the pons, resulting in paramedian pontine infarction. (medscape.com)
  • We report a 51-year-old man who developed acute pontine infarction associated with dissection of the distal basilar artery. (hkmj.org)
  • The basilar artery runs cranially in the central groove of the pons towards the midbrain within the pontine cistern . (radiopaedia.org)
  • It arises from the confluence of two vertebral arteries at the medullo-pontine junction, to ascend through the basilar sulcus on the ventral aspect of the pons. (statpearls.com)
  • The pontine arteries are small perforating vessels which supply the pons. (statpearls.com)
  • As the basilar artery courses through the basilar sulcus on the ventral aspect of the pons, it travels adjacent to the abducens nerve at the lower pontine border and the oculomotor nerve as it ascends more cranially. (statpearls.com)
  • An integral part of the basilar pons is the pontine nuclei. (wikipedia.org)
  • These pontine nuclei are integral in helping the basilar pons carry information from the cerebral cortex to the cerebellum. (wikipedia.org)
  • Most aneurysms occur at the bifurcation of large cerebral arteries. (strokecenter.org)
  • Over 90% of aneurysms occur in the circle of Willis and in the proximal middle cerebral artery. (strokecenter.org)
  • Pseudoaneurysms, or false aneurysms, are differentiated from true aneurysms by the layers of the artery involved. (lww.com)
  • As was seen in this case, the majority of basilar artery aneurysms are associated with skull base fractures. (lww.com)
  • Due to the dynamics of cerebral blood flow during sexual intercourse, basilar artery dissections and aneurysms should be considered in patients with sudden-onset headaches during orgasm. (nih.gov)
  • Some more unusual patterns have an increased association with aneurysms, but this would have likely been described if present and vertebro basilar hypoplasia, as in the picture, is pretty common. (healthtap.com)
  • The authors retrospectively analyzed the results of their 6-year experience in the treatment of basilar artery (BA) bifurcation aneurysms by using Guglielmi detachable coils (GDCs). (thejns.org)
  • Serial angiographic appearance of segmental arterial mediolysis manifesting as vertebral, internal mammary and intra-abdominal visceral artery aneurysms in a patient presenting with subarachnoid hemorrhage and review of the literature. (springer.com)
  • Saccular aneurysms at middle basilar trunk fenestration. (semanticscholar.org)
  • Endovascular management of basilar artery aneurysms associated with fenestrations. (semanticscholar.org)
  • article{f5cd5108-d65d-4e15-8bae-0b0ebd620ed1, abstract = {Based on the previous finding that 5-hydroxytryptamine (5-HT) co-exists with norepinephrine (NE) in cerebrovascular sympathetic nerve fibers and can be released during electrical nerve stimulation, the postjunctional interaction between the two amines was studied in isolated basilar artery of guinea pig. (lu.se)
  • abstract = "Studies in vitro suggest that the basilar artery has distinctive responses to endotheliumde pendent stimuli. (nebraska.edu)
  • abstract = "The goal of this study was to determine whether responses of the basilar artery are altered during diabetes mellitus. (nebraska.edu)
  • Clinical and radiological predictors of recanalisation and outcome of 40 patients with acute basilar artery occlusion treated with intra-arterial thrombolysis. (medscape.com)
  • Brain stem diffusion-weighted imaging lesion score: a potential marker of outcome in acute basilar artery occlusion. (medscape.com)
  • Transcranial color-coded duplex sonography in suspected acute basilar artery occlusion. (medscape.com)
  • Kumar G, Shahripour RB, Alexandrov AV. Recanalization of acute basilar artery occlusion improves outcomes: a meta-analysis. (medscape.com)
  • Staged escalation therapy in acute basilar artery occlusion: intravenous thrombolysis and on-demand consecutive endovascular mechanical thrombectomy: preliminary experience in 16 patients. (medscape.com)
  • Endovascular embolectomy of acute basilar artery occlusion. (medscape.com)
  • Methods- Patients with acute basilar artery occlusion treated with intra-arterial thrombolytics were studied with multimodal MRI before treatment, several hours after treatment, and at day 7. (ahajournals.org)
  • Acute basilar artery occlusion can lead to substantial morbidity and mortality, estimated to be 80% to 90% in patients treated with standard medical care by prior clinical studies. (ahajournals.org)
  • The objectives of our study were to determine the pattern of diffusion-perfusion MRI lesions in patients with acute basilar artery occlusion, to determine whether thrombolytic therapy can salvage at-risk tissue in the posterior circulation, and to correlate the MRI abnormalities with clinical outcome. (ahajournals.org)
  • Ten patients (9 men, 1 woman) with acute basilar artery occlusion meeting inclusion criteria were treated with intra-arterial thrombolysis at our institution between November 1998 and January 2001 (see Table ). (ahajournals.org)
  • Acute basilar artery occlusion (ABAO) causes devastating strokes that carry high mortality and morbidity. (cns.org)
  • Methods Basilar Artery International Cooperation Study was a prospective, observational registry of patients with acute basilar artery occlusion with 48 recruiting centers worldwide. (uni-regensburg.de)
  • Acute basilar artery occlusion (BAO) is associated with severe neurological dysfunction and high mortality rates. (jkns.or.kr)
  • Acute basilar artery occlusion (BAO) is rare but is known to be related to severe neurologic dysfunction and morbidity or mortality 2 , 23) . (jkns.or.kr)
  • Coloured X-ray arteriogram (angiogram) of the head of a patient (rear view), showing an aneurysm of the basilar artery. (sciencephoto.com)
  • Occlusion of the distal basilar artery is usually secondary to embolism and is most frequent in the fourth decade. (medscape.com)
  • The right vertebral artery injection revealed similar findings ( Fig 1B ), with the addition of two small bridging vessels to the contralateral vertebral artery, one at the proximal and one at the distal segment. (ajnr.org)
  • The hemorrhage was attributed to a small focal rent in the distal basilar artery next to an atheromatous plaque. (bmj.com)
  • The small caliber fenestration limbs were the only access to the distal basilar artery, but stretched laterally and concealed by the aneurysm fundus. (bmj.com)
  • MRA showing occlusion of the distal basilar artery pre-thrombolysis. (medcraveonline.com)
  • Prognosis is extremely variablewith poor outcome (defined as death, dependency, severe disability or modified Rankin score 3-6) in 54-95% of cases but factors thought to be associated with worse prognosis include embolic aetiology, distal artery involvement, occlusion rather than stenosis and presentation with decreased consciousness, tetraparesis, abnormal pupils or bulbar signs [1]. (medcraveonline.com)
  • However, it can also be seen in the mid-basilar and distal tip. (radiopaedia.org)
  • ICD-9 code 433.01 for Occlusion and stenosis of basilar artery with cerebral infarction is a medical classification as listed by WHO under the range -CEREBROVASCULAR DISEASE (430-438). (aapc.com)
  • What are common basilar artery migraine symptoms? (reference.com)
  • Common basilar artery migraine symptoms include cold feet and hands, light and sound sensitivity, nausea and vomiting, according to WebMD. (reference.com)
  • People with a basilar artery migraine typically experience a minimum of two of the following symptoms: slurred speech, loss of balance, hearing impairments, body tingling and double vision. (reference.com)
  • A person who has a minimum of two attacks with at least two auras each is diagnosed as having a basilar artery migraine, advises WebMD. (reference.com)
  • A hemiplegic migraine is sometimes confused with a basilar artery migraine, as the two share common symptoms. (reference.com)
  • However, a weakening of motor skills occurs with a hemiplegic migraine but not with a basilar artery migraine. (reference.com)
  • Basilar artery migraine and reversible imaging abnormalities. (ajnr.org)
  • We report a case of a basilar artery migraine in a 17-year-old boy with transient CT and MR abnormalities after each of two migraine episodes. (ajnr.org)
  • How can basilar artery migraine be treated? (ndtv.com)
  • Home » Frequently asked Questions on Health » How can basilar artery migraine be treated? (ndtv.com)
  • I am a 22 years old male suffering from basilar artery migraine for the past two years. (ndtv.com)
  • The type of migraine you are having conforms to basilar type migraine. (ndtv.com)
  • In basilar type migraine there are certain neurological dysfunction, which occurs prior to the onset of headache and are called aura. (ndtv.com)
  • If it is a basilar type migraine, there are drugs available, which can be prescribed to prevent future attacks. (ndtv.com)
  • What is a basilar artery migraine? (healthtap.com)
  • Can you die from basilar artery migraine? (healthtap.com)
  • Do a lot of people get basilar artery migraine? (healthtap.com)
  • Basilar artery migraines are a specific type of migraine and are less common. (healthtap.com)
  • What can I eat to avoid basilar artery migraine? (healthtap.com)
  • Describe the features of a basilar artery migraine. (healthtap.com)
  • What are the key symptoms of basilar artery migraine? (healthtap.com)
  • What are the consequences of having basilar artery migraine? (healthtap.com)
  • What is the definition or description of: Basilar artery migraine? (healthtap.com)
  • What we used to call basilar migraines are now usually called complicated migraines with neurologic symptoms accompanying the migraine such as numbness weakness or trouble speaking. (healthtap.com)
  • What are the most effective home remedies for basilar artery migraine? (healthtap.com)
  • My sister says she has basilar artery migraine. (healthtap.com)
  • ACHE If you've heard of this type of migraine before, you've probably heard or seen the term basilar artery migraine (BAM). (savedwebhistory.org)
  • 1.2.6, Basilar-type migraine, G43.103. (savedwebhistory.org)
  • Considered a subtype of migraine with aura, this migraine starts in the basilar artery , which forms at the base of the skull. (savedwebhistory.org)
  • Basilar Artery Migraine - Headache-Treatment-Options Auras are symptoms that precede the actual headache for many migraine patients. (savedwebhistory.org)
  • Migraine , the National Migraine Association: Basilar -Type Migraine Basilar-Type Migraine, BTM (formerly called Basilar Artery Migraine or BAM). (savedwebhistory.org)
  • Basilar migraine - Migraine .com Basilar migraine is recognized as a distinct form of migraine disorder. (savedwebhistory.org)
  • Initially described more than 40 years ago, basilar-type migraine has posed diagnostic and therapeutic dilemmas for medical practitioners. (springer.com)
  • Despite the absence of any data convicting basilar-type migraine as a vasospastic condition, the use of triptans in such patients has been considered prohibited. (springer.com)
  • This review focuses on the diagnosis, clinical presentation, available genetic information, and treatment considerations in patients with basilar-type migraine. (springer.com)
  • Is familial hemiplegic migraine a hereditary form of basilar migraine? (springer.com)
  • Basilar migraines are a type of migraine that may cause a person to have visual disturbances. (medicalnewstoday.com)
  • A basilar migraine affects the vision, causing an 'aura' of flashing lights, spots, or lines. (medicalnewstoday.com)
  • A basilar migraine is a rare type of migraine that begins in the brain stem. (medicalnewstoday.com)
  • A basilar migraine may be caused by a constriction of blood vessels that limit blood flow to the brain. (medicalnewstoday.com)
  • A basilar migraine may cause a person to see lines, flashes of light, or spots. (medicalnewstoday.com)
  • A person will typically feel exhausted or drained following a basilar migraine. (medicalnewstoday.com)
  • Some researchers believe that a basilar migraine occurs when the basilar artery gets constricted, but more research is needed to confirm this. (medicalnewstoday.com)
  • The basilar artery arises from the union of the two vertebral arteries at the junction between the medulla oblongata and the pons between the abducens nerves (CN VI). (wikipedia.org)
  • It ascends superiorly in the basilar sulcus of the ventral pons and divides at the junction of the midbrain and pons into the posterior cerebral arteries . (wikipedia.org)
  • It arises from the confluence of the two vertebral arteries at the junction between the medulla oblongata and the pons . (wikidoc.org)
  • It artery arises from the confluence of the left and right vertebral arteries at the base of the pons as they rise towards the base of the brain . (radiopaedia.org)
  • The vertebral arteries unit to form the basilar artery at the junction between the medulla oblongata and pons . (anatomyzone.com)
  • It ascends superiorly in the basilar sulcus ventral to the pons and divides at the ponto-mesencephalic junction into the paired posterior cerebral arteries close to the pituitary stalk. (turkcewiki.org)
  • Paramedian perforating arteries arising either directly from the dorsal surface or from short circumferential arteries running around and into the pons supplying the corticospinal tracts and vital deep nuclei. (turkcewiki.org)
  • The basilar pons has this kind of appearance due to the fibers that come out of the pons and enter the cerebellum. (wikipedia.org)
  • Specifically, the basilar pons contains all the corticofugal fibers, which include the corticospinal, corticobulbar (or corticonuclear), and corticopontine fibers. (wikipedia.org)
  • The basilar pons is able to do this via the corticopontine fibers that it receives. (wikipedia.org)
  • Once the information passes from the cerebral cortex to the basilar pons and then finally to the cerebellum, the cerebellum gets information regarding complex cognitive functions. (wikipedia.org)
  • The two vertebral arteries and the basilar artery are sometimes together called the vertebrobasilar system , which supplies blood to the posterior part of the circle of Willis and joins with blood supplied to the anterior part of the circle of Willis from the internal carotid arteries . (wikipedia.org)
  • MRI vertebrobasilar hypoplasia right side theres robust flow void anastomosing the basilar artery w cavernous portion of internal carotid artery/mean? (healthtap.com)
  • Arteriosclerotic internal carotid & vertebro basilar arteries predominantly the left vertebrobasilar segment appearing tortuous with slight prominence? (healthtap.com)
  • At around day 28 of embryonic life, the brain receives arterial supply from the primitive carotid artery via the carotid-vertebrobasilar anastomosis, formed by three longitudinal neural arteries (named after the accompanying nerves): the primitive trigeminal artery, the primitive hypoglossal artery and the primitive pro-atlantal artery. (statpearls.com)
  • Trigeminal neuralgia secondary to vertebrobasilar dolichoectasia and basilar artery dissection is rare. (myneuronews.com)
  • To anatomically evaluate perforating branches arising from the pSCA and the upper basilar artery (BA). (ovid.com)
  • Terminally, the basilar artery branches to form the right and left posterior cerebral arteries. (statpearls.com)
  • Along its course, the basilar artery gives off several branches. (statpearls.com)
  • P4 or caica rine fissure includes the terminal branches (parieto-occipinl and calcarme arteries,cortical branches). (europeanmedical.info)
  • The anterior cerebral artery works its way from the front of the brain toward the back and branches throughout the top of the brain. (livestrong.com)
  • The Posterior Cerebral Artery or PCA branches from the basilar artery and extends toward the back of the brain. (livestrong.com)
  • At the major arteries, the arterial branches are listed separately following the designation branches . (thefreedictionary.com)
  • This malformation, fed by branches of the external carotid artery, was drained exclusively by a parieto-occipital cortical vein. (thejns.org)
  • 8,10] Symptoms consistent with basilar artery occlusion include limb paralysis, bulbar or pseudobulbar paralysis of the cranial nerve motor nuclei, nystagmus, eye movement disturbances and coma. (thefreedictionary.com)
  • Can temporal arteries mimic Tmj symptoms? (healthtap.com)
  • What symptoms can "anomalous right subclavian artery" cause? (healthtap.com)
  • A middle-aged patient presented with posterior circulation symptoms attributable to a large eccentric basilar trunk aneurysm. (bmj.com)
  • As far at the middle cerebral artery is concerned, symptoms may be a bit different, depending on which side of the brain is affected. (livestrong.com)
  • Basilar artery migraines an unusual condition distinguished by headache related with a range of neurological symptoms. (naturalcurefor.com)
  • Basilar migraines have a variety of specific symptoms, but also share symptoms with other aura migraines. (medicalnewstoday.com)
  • Despite growing literature on posterior vascular disease, specific information about the cognitive and functional profiles of patients with basilar artery occlusion disease (BAOD) is scarce. (hindawi.com)
  • Abacavir induces acute endothelium-dependent relaxation of rat basilar arteries, probably through the activation of adenosine A2 receptors in endothelial cells, which subsequently leads to the release of nitric oxide, resulting in activation of the cyclic guanosine monophosphate/protein kinase G-dependent pathway in vascular smooth muscle cells. (sigmaaldrich.com)
  • Additional vascular anomalies included the left pericallosal artery arising from the right anterior cerebral artery, and the right ophthalmic artery arising from the internal carotid artery cavernous segment. (ajnr.org)
  • Basilar artery hypoplasia is a rare vascular anomaly of the basilar artery . (radiopaedia.org)
  • Caliber, length, and angle of bifurcation of the basilar artery help in assessing the feasibility and approach for various surgical procedures and predict cerebro-vascular diseases. (aimspress.com)
  • Vascular reactivity of isolated basilar arteries was studied by isometric force recording. (nuigalway.ie)
  • At the differentiated diagnosis of asymmetrical sensorineural hearing losses, vascular disorders are present, one of which is megadolicho basilar artery. (arquivosdeorl.org.br)
  • The present study was designed to determine the effects of these analogues on the vascular smooth muscle of isolated canine basilar arteries. (elsevier.com)
  • The authors describe a fatal subarachnoid hemorrhage during the treatment of a basilar artery (BA) stenosis caused by a vascular rupture distant from the site of angioplasty. (ox.ac.uk)
  • The labyrinthine artery, also called the internal auditory artery, typically arises from the AICA but may arise from the basilar artery in about 15% of cases. (statpearls.com)
  • Internal auditory (labyrinthine) artery. (europeanmedical.info)
  • We investigated the expression of the mRNA transcripts for the BK(Ca) channel and its modulatory beta-subunits (beta1-beta4) in porcine basilar and middle cerebral arteries using reverse transcription polymerase chain reaction (RT-PCR) and quantitative real-time PCR. (forskningsdatabasen.dk)
  • The study verified that the BK(Ca) channel alpha-subunit is located to smooth muscle cells of porcine basilar and middle cerebral arteries. (forskningsdatabasen.dk)
  • The mRNA transcript for beta1-, beta2- and beta4-subunit were shown by RT-PCR in porcine basilar and middle cerebral arteries. (forskningsdatabasen.dk)
  • A basilar artery stroke classically leads to locked-in syndrome . (wikipedia.org)
  • The recognized syndromes more commonly associated with basilar artery occlusion are locked-in syndrome and top-of-the-basilar syndrome. (medscape.com)
  • A cerebrovascular accident involving the basilar artery may result in characteristic clinical syndromes, notable among them are the "locked-in syndrome" and the "top-of-the-basilar syndrome. (statpearls.com)
  • In human anatomy , the basilar artery is one of the arteries that supplies the brain with oxygen-rich blood. (wikidoc.org)
  • n. in anatomy, one of the arteries which supply the brain with oxygenated blood. (psychologydictionary.org)
  • Hyperdense basilar artery sign on unenhanced CT predicts thrombus and outcome in acute posterior circulation stroke. (medscape.com)
  • Purpose The hyperdense basilar artery sign (HBAS) is an indicator of vessel occlusion on non contrast-enhanced computer tomography (NECT) in acute stroke patients. (harvard.edu)
  • Interventional neuroradiologists (INR) felt the risks of mechanical thrombectomy outweighed the benefits as he had presented with mild basilar syndrome. (medcraveonline.com)
  • Impaired cerebral vasoreactivity and risk of stroke in patients with asymptomatic carotid artery stenosis," Journal of the American Medical Association , vol. 283, no. 16, pp. 2122-2127, 2000. (hindawi.com)
  • H. Markus and M. Cullinane, "Severely impaired cerebrovascular reactivity predicts stroke and TIA risk in patients with carotid artery stenosis and occlusion," Brain , vol. 124, part 3, pp. 457-467, 2001. (hindawi.com)
  • Is 700/0 carotid artery narrowing a TIA symtom? (healthtap.com)
  • What causes carotid artery stenosis? (healthtap.com)
  • Risk of stroke with 90% right carotid artery blockage? (healthtap.com)
  • Obara H, Matsumoto K, Narimatsu Y, Sugiura H, Kitajima M, Kakefuda T. Reconstructive surgery for segmental arterial mediolysis involving both the internal carotid artery and visceral arteries. (springer.com)
  • Fenestration of the supraclinoid internal carotid artery with rupture of associated aneurysm. (semanticscholar.org)
  • Coronal (C) and sagittal (D) DSA images show left internal carotid artery (ICA) (triangle), occlusion of right ICA (arrow), left anterior cerebral artery (arrowhead), and left middle cerebral artery (star). (neurology.org)
  • Pi or precommun Seating or mesencephalic segment, Internal Carotid Artery which lies in the interpeduncular cistern, curving around the midbrain and ending at its junction with the posterior communicating artery. (europeanmedical.info)
  • Rationale: Recently our study group reported the results of the Basilar Artery International Cooperation Study (BASICS), a prospective registry of patients with an acute symptomatic basilar artery occlusion (BAO). (clinicaltrials.gov)
  • Data were analysed on patients from three centres with symptomatic basilar artery occlusion treated conventionally. (bmj.com)
  • Conventional treatment of symptomatic basilar artery occlusion is associated with a poor outcome in almost 80% of patients, which emphasises the importance of the search for a more effective treatment approach. (bmj.com)
  • This is caused by infarction of the basis pontis secondary to occlusive disease of the proximal and middle segments of the basilar artery, resulting in quadriplegia. (medscape.com)
  • Basilar artery occlusive disease in stroke survivors in a multiethnic population. (biomedsearch.com)
  • OBJECTIVES: To describe clinical, radiological findings, and outcome in a multiethnic population of stroke survivors with basilar artery occlusive disease (BAOC). (biomedsearch.com)
  • The mean diameter of the basilar artery after SAH induction in the cholesterol-treated group was decreased 47% compared with the mean diameter of the control group. (surgicalneurologyint.com)
  • Our first goal was to examine the effects of acetylcholine on diameter of the basilar artery in vivo. (nebraska.edu)
  • Diameter of the basilar artery was measured through a cranial window in anesthetized rats (n=25). (nebraska.edu)
  • Baseline diameter of the basilar artery was 247±10 /μm mean± SEM. (nebraska.edu)
  • The thromboxane analogue U46619 at 10 -5 and 10 -7 M reduced the diameter of the basilar artery by 18±5% and 29±4%, respectively. (nebraska.edu)
  • Thus, in contrast to some studies of the basilar artery in vitro, acetylcholine produces dilatation of the basilar artery in vivo. (nebraska.edu)
  • Mayhan, WG 1992, ' Impairment of endothelium-dependent dilatation of the basilar artery during diabetes mellitus ', Brain Research , vol. 580, no. 1-2, pp. 297-302. (nebraska.edu)
  • Summary: We describe a 42-year-old man with complete duplication or extreme fenestration of the basilar artery. (ajnr.org)
  • While fenestration of the basilar artery has been reported to be as high as 6% in postmortem studies, its angiographic prevalence has been described as ranging from 0.04% to 0.6% (1) . (ajnr.org)
  • 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. (isciii.es)
  • Lindsberg PJ, Sairanen T, Strbian D, Kaste M. Current treatment of basilar artery occlusion. (cns.org)
  • Long-term outcome after intravenous thrombolysis of basilar artery occlusion. (medscape.com)
  • Intravenous thrombolysis of basilar artery occlusion: thrombus length versus recanalization success. (medscape.com)
  • Treatment included emergent intra-arterial tPA and mechanical thrombolysis of basilar artery clot, followed by later coiling of the vertebral artery to prevent recurring episodes of basilar artery ischemia. (luriechildrens.org)
  • The vertebral and basilar arteries are clearly seen without dissection, narrowing, or blockage. (nih.gov)
  • A review of the literature focused on basilar artery pathology is very limited and only includes cases of basilar artery occlusion or aneurysm formation. (appliedradiology.com)
  • The classic findings in this case are associated with an extremely rare and unique pathology, a basilar artery transection. (appliedradiology.com)
  • The basilar artery transection is extensively evaluated in our case with radiology and pathology correlation. (appliedradiology.com)
  • We report the largest series of endovascular reconstruction of occluded dominant vertebral arteries prior to basilar thrombectomy. (bmj.com)
  • Results From August 2010 to September 2012, six patients were identified who underwent vertebral reconstruction prior to basilar thrombectomy. (bmj.com)
  • Conclusions Complete vertebral occlusion below a basilar thrombus can be recanalized prior to thrombectomy. (bmj.com)
  • Arteries supplying the cerebrum with blood have attracted attention for a long time, both in human and animals. (media.pl)
  • Having prepared the cerebrum, the course and variability of cerebral base arteries were investigated and a digital-camera photographic documentation made. (media.pl)
  • At 10 -8 and 10 -7 M, serotonin had little effect on pial arterioles on the cerebrum but constricted the basilar artery by 18 ±2% and 29 ±4%, respectively. (nebraska.edu)
  • At 10 -6 and 10 -5 M, adenosine 5′-diphosphate produced marked dilatation of pial arterioles on the cerebrum (9±2% and 20±3%, respectively) but had little effect on the basilar artery (increased diameter by 4±2% and 6±2%, respectively). (nebraska.edu)
  • Therapy of basilar artery occlusion: a systematic analysis comparing intra-arterial and intravenous thrombolysis. (medscape.com)
  • Conclusions- In this first report of diffusion-perfusion MRI in patients with acute basilar artery occlusions treated with intra-arterial thrombolysis, significant mismatch was visualized on pretreatment studies, suggesting that large volumes of salvageable tissue were present. (ahajournals.org)
  • 6,8 Introduction of an intra-arterial catheter to administer thrombolytics locally may at times be difficult and time-consuming, considering the often stenosed and elongated arteriosclerotic vertebral arteries, and can increase treatment delay if considered the sole therapy mode. (ahajournals.org)
  • Most data on the outcome of basilar artery occlusion are from recent case series of patients treated with intra-arterial thrombolysis. (bmj.com)
  • Pain in hand arterial doppler shows interosseos artery enlarged. (healthtap.com)
  • Intra-arterial thrombolysis in acute basilar artery thromboembolism: the initial Mayo Clinic experience. (cns.org)
  • The vessels with their branchings and connections create in the cerebral base two main arterial circles of the brain (circulus arteriosus cerebri) and the basilar artery ( a. basilaris ). (media.pl)
  • At day 29 of gestation, the paired longitudinal neural artery on both sides of the hindbrain unite in the midline to form the basilar arterial plexus. (statpearls.com)
  • The basilar arterial plexus communicates anteriorly and cranially via the posterior communicating arteries and caudally with the vertebral arteries. (statpearls.com)
  • The vertebral and internal carotid arteries provide the arterial supply to the brain, forming the Circle of Willis at the base of the brain. (anatomyzone.com)
  • Introduction Basilar artery is an unpaired medium-sized artery formed by the confluence of right and left vertebral arteries at the pontomedullary junction and extends to the pontomesencephalic junction. (aimspress.com)
  • Stroke or transient ischemic attacks with basilar artery stenosis or occlusion: clinical patterns and outcome. (medscape.com)
  • The clinical features of basilar artery occlusion as seen in the adult are not apparent in the neonate. (nih.gov)
  • The complete absence of any clinical deterioration between CTA and MRA makes basilar artery occlusion unlikely. (thefreedictionary.com)
  • Since basilar artery occlusion (BAO) is associated with a high mortality and morbidity, its early detection is of great clinical value. (harvard.edu)
  • Clinical features of proven basilar artery occlusion. (semanticscholar.org)
  • Basilar artery occlusion: clinical and radiological correlation. (semanticscholar.org)
  • The basilar artery (middle of figure) arises from the vertebral arteries and terminates when it bifurcates in the left and right posterior cerebral arteries . (wikidoc.org)
  • Human basilar artery: morphology & variations[J]. AIMS Medical Science, 2020, 7(4): 278-292. (aimspress.com)
  • Katušić, ZS 1991, ' Endothelium-independent contractions to jvg-monomethyl-l-arginine in canine basilar artery ', Stroke , vol. 22, no. 11, pp. 1399-1404. (elsevier.com)
  • Results The basilar artery was formed by the confluence of two vertebral arteries in all specimens extending from the pontomedullary junction to the pontomesencephalic junction in 2/3rd of the cases. (aimspress.com)
  • Initially thought to be a proximal basilar dilatation, the aneurysm was later found to arise from an obscured and distended basilar fenestration. (bmj.com)
  • See all of basilar posterior cerebral artery , no other writeups in this node. (everything2.com)
  • Complete duplication of the basilar artery, with each vertebral artery continuing separately to form a posterior cerebral artery, has been described previously (5, 6) . (ajnr.org)
  • Effects of GV20 acupuncture on cerebral blood flow velocity of middle cerebral artery and anterior cerebral artery territories, and CO 2 reactivity during hypocapnia in normal subjects," The Journal of Alternative and Complementary Medicine , vol. 17, no. 3, pp. 219-224, 2011. (hindawi.com)
  • Carbondioxide reactivity of the blood flow in human basilar artery estimated by the transcranial Doppler method in normal men: a comparison with that of the middle cerebral artery," Ultrasound in Medicine & Biology , vol. 14, no. 6, pp. 479-483, 1988. (hindawi.com)
  • What is cerebral artery occlusion? (healthtap.com)
  • We thus conclude that PAR1 plays a key role in the development of the vasospastic state of the cerebral artery in SAH. (ahajournals.org)
  • The planned treatment was flow diversion with loose coil packing which was successfully performed using a Pipeline Flex device deployed from the basilar to the left posterior cerebral artery. (bmj.com)
  • The features characteristic for this species include the variability of descend of the rostral choroid artery as well as of the posterior cerebral artery. (media.pl)
  • The basilar artery provides the posterior contribution to the circle of Willis via the posterior cerebral artery. (statpearls.com)
  • Fetal type posterior cerebral artery was noticed in 9.4% cases. (aimspress.com)
  • The objective of this paper was to report a rare complication of basilar artery (BA) tourniquet treatment of a giant basilar tip aneurysm, and to discuss possible causes for the formation of a de novo giant posterior cerebral artery (PCA) aneurysm. (myneuronews.com)
  • Outcome in patients with basilar artery occlusion treated conventionally. (medscape.com)
  • The internal carotid and vertebral arteries. (wikidoc.org)
  • 2 Of those cases, the vast majority involve the internal carotid and vertebral arteries. (appliedradiology.com)
  • A six-month follow-up angiogram showed remodeling of the basilar artery, and complete occlusion of the aneurysm. (bmj.com)