Presenting symptomsDissectionOcclusionDominant vertebral arteryCauses vertebrobasilar insufficiencySubclavian arteryIntracranial vertebral arteryAtherosclerosisStrokeDistalStentsCerebralIschemiaBasilar arteriesRight vertebralVertigoArterialExtracranialLesionsAngiographyPatientsAnterior inferiAtheroscleroticStentingCervicalSpinalNeckComplicationsSyndromeCirculationCarotid arteriesCompressionMETHODSRadial ArteryTomographyUltrasoundVascularDopplerRotationBloodFusiformArteriolesAngioplastySegmentLateral
Presenting symptoms1
- Vertigo is one of several common presenting symptoms associated with basilar artery occlusion. (medscape.com)
Dissection9
- Arterial dissection is much more common in the extracranial vertebral artery. (medscape.com)
- This is a common cause of vertigo in the eldery but can occur earlier in life due to vertebral artery dissection (tear). (portmelbournephysio.com.au)
- Vertebral artery dissection (VBA) is a rare condition where the blood supply to part or all of the brain is blocked. (wetlab.org)
- 8 Blum CA, Yaghi S. Cervical Artery Dissection: A Review of the Epidemiology, Pathophysiology, Treatment and Outcome. (thieme-connect.com)
- Timing of Incident Stroke Risk After Cervical Artery Dissection Presenting Without Ischemia. (thieme-connect.com)
- Systematic Review and Meta-analysis of Chiropractic Care and Cervical Artery Dissection: No Evidence for Causation. (thieme-connect.com)
- Does case misclassification threaten the validity of studies investigating the relationship between neck manipulation and vertebral artery dissection stroke? (thieme-connect.com)
- Patients who receive neck manipulation are at risk for a stroke caused by vertebral artery dissection. (edzardernst.com)
- Studies have shown that vertebral artery dissection occurs in approximately 1 in 100,000 people and can be caused by something as simple as cracking your neck . (edzardernst.com)
Occlusion16
- Bow hunter's stroke is a consequence of vertebrobasilar insufficiency as a result of mechanical occlusion or stenosis of the vertebral artery at the C1-C2 level by head rotation. (nih.gov)
- No case of bow hunter's stroke as a result of mechanical occlusion of a nondominant vertebral artery has ever been reported. (nih.gov)
- We describe a rare case of Wallenberg's syndrome caused by occlusion of a nondominant vertebral artery induced by head rotation. (nih.gov)
- Given the anatomy of the posterior circulation and the circle of Willis, the clinical manifestations of basilar artery thrombosis depend on the location of the occlusion, the extent of the thrombus, and the collateral flow. (medscape.com)
- If the proximal segment of the basilar artery is occluded and the occlusion has resulted from a slowly progressive stenosis, collateralization occurs within the cerebellum into the circumferential branches of the basilar artery. (medscape.com)
- The mechanism of stroke in basilar artery occlusion differs depending on the segment of the vessel involved. (medscape.com)
- On hyper extension of approximately 10-15 degrees, passively performed by the patient until symptoms are reproduced, angiogram demonstrates complete occlusion of the right Vertebral Artery at approximately the C2-C1 level. (nspc.com)
- After extensive consultation and discussion of potential therapeutic and management strategies, we decided that permanent Occipital Cervical Fusion was the best approach to prevent potentially life-threatening Vertebral Basilar Occlusion during dynamic neck movements. (nspc.com)
- Bow hunter's syndrome (BHS) is a rare condition induced by occlusion or compression of the vertebral artery (VA) during head movement or rotation. (surgicalneurologyint.com)
- Bow hunter's syndrome (BHS) is a rare condition characterized by vertebrobasilar insufficiency associated with transient occlusion typically of the dominant vertebral artery (VA) due to bony impingement (i.e., osteophyte formation) during head movement/rotation. (surgicalneurologyint.com)
- Occlusion of vertebral artery causes vertebrobasilar insufficiency and we reported cervicogenic vertigo case which was treated by simple decompression of transverse foramen of C1. (e-neurospine.org)
- Bow hunter's syndrome is symptomatic vertebrobasilar insufficiency (VBI) caused by occlusion of the vertebral artery in cervical spine which is provoked by head rotation 2 , 6 , 11 , 12) . (e-neurospine.org)
- But in right side head rotation position, the patient experienced vertigo attack and angiography showed occlusion of left vertebral artery ( Fig. 2 ). (e-neurospine.org)
- Vertebral artery angiography was performed 1 month later and occlusion of left vertebral artery during right side head rotation was not observed anymore ( Fig. 4 ). (e-neurospine.org)
- However, if the cause of subclavian steal syndrome is determined to be atherosclerotic stenosis or occlusion of the proximal subclavian artery, patients should be treated with lifelong antiplatelet therapy to reduce the risk of associated myocardial infarction, stroke, and other vascular causes of death. (baahkast.com)
- Subclavian steal phenomenon (or syndrome) originates from severe stenosis or occlusion of the proximal subclavian artery resulting in the reversal of blood flow in the ipsilateral vertebral artery (VA) to perfuse the limb. (thoracickey.com)
Dominant vertebral artery2
- In most cases, a dominant vertebral artery is involved. (nih.gov)
- The patient was 48 years old female who had left side dominant vertebral artery and vertigo was provoked when she rotated her head to right side. (e-neurospine.org)
Causes vertebrobasilar insufficiency1
- Vertebrobasilar insufficiency - Vertebral artery insufficiency due to its occulusion while it passes through vertebral foremen sue to degenerative changes for lumbar spine causes vertebrobasilar insufficiency leading to death of condrocytes of intervertebral disc and osteophytes starts accumulating and depositing. (atomictherapy.org)
Subclavian artery12
- The vertebral artery is dissected superiorly up to the level of the tendon of the longus colli and inferiorly to its origin from the subclavian artery, exposing 2-3 centimeters of length. (medscape.com)
- What happens if the subclavian artery is blocked? (baahkast.com)
- What causes subclavian artery stenosis? (baahkast.com)
- How do you test for subclavian artery stenosis? (baahkast.com)
- The Subclavian Steal Syndrome is a rare yet well-known phenomenon that presents when a steno-occlusive lesion of the proximal subclavian artery results in the flow reversal of the vertebral artery, giving rise to vertebrobasilar insufficiency [1,2]. (baahkast.com)
- How is subclavian artery stenosis diagnosed? (baahkast.com)
- Can you stent the subclavian artery? (baahkast.com)
- Angioplasty and stenting of the left subclavian artery is a good option for the treatment of coronary subclavian steal syndrome, with high rates of technical and clinical success. (baahkast.com)
- An increased prevalence of subclavian artery stenosis is associated with a history of smoking, high systolic blood pressure and peripheral arterial disease and inversely associated with higher levels of high density lipoprotein. (baahkast.com)
- Blood flow to both the affected subclavian artery (which supplies the arm) and the vertebral artery are thus diminished. (baahkast.com)
- When this happens, blood can flow in the reverse direction (away from the brain) in the affected vertebral artery, to supply the blocked subclavian artery. (baahkast.com)
- Stent placement in the left subclavian artery with femoral and radial access. (thoracickey.com)
Intracranial vertebral artery3
- Is cervical spine rotation, as used in the standard vertebrobasilar insufficiency test, associated with a measureable change in intracranial vertebral artery blood flow? (physio-pedia.com)
- Can Intracranial Vertebral Artery Hypoplasia be an Etiopathogenetic Factor for Barré-Lièou Syndrome Other than Arcuate Foramen? (turkishneurosurgery.org.tr)
- To investigate the co-occurrence of the arcuate foramen (AF) variation of atlas and intracranial vertebral artery (V4) hypoplasia and, therefore, to understand the pathophysiology of Barré-Lièou syndrome (BLS). (turkishneurosurgery.org.tr)
Atherosclerosis4
- Methods A search strategy using the terms 'stents', 'drug-eluting stents', 'atherosclerosis', 'vertebral artery', and 'vertebrobasilar insufficiency' was employed through Medline. (bmj.com)
- Arteries: Histology (ICAs) secondary to atherosclerosis Atherosclerosis Atherosclerosis is a common form of arterial disease in which lipid deposition forms a plaque in the blood vessel walls. (lecturio.com)
- We restratified the patients based on NVAFV and contralateral VA stenosis grades to analyse the proportion of each PCI mechanism-large artery atherosclerosis and branch artery occlusive disease. (bmj.com)
- Carotid artery disease, also known as carotid atherosclerosis, occurs when there is a buildup of plaque in these arteries. (seattleneurosciences.com)
Stroke9
- The risk factors for basilar artery thrombosis are the same as those seen generally in stroke . (medscape.com)
- BACKGROUND: Symptomatic vertebral artery stenosis is associated with a high risk of recurrent stroke, with higher risks for intracranial than for extracranial stenosis. (duke.edu)
- CLASSIFICATION OF EVIDENCE: This study provides Class I evidence that for patients with symptomatic vertebral stenosis, angioplasty with stenting does not reduce the risk of stroke. (ox.ac.uk)
- Complications of vertebrobasilar circulatory disorders are stroke and its complications. (medlineplus.gov)
- Risk of Vertebrobasilar Stroke and Chiropractic Care: Results of a Population-Based Case-Control and Case-Crossover Study. (thieme-connect.com)
- The most serious complication of carotid artery stenosis is stroke. (lecturio.com)
- It is with heavy hearts that we confirm the passing today of Katie May - mother, daughter, sister, friend, businesswoman, model and social media star - after suffering a catastrophic stroke caused by a blocked carotid artery on Monday," the statement reads. (scienceblogs.com)
- Approximately one-fifth of all ischaemic strokes occur in the posterior circulation system, and steno-occlusive disease of the vertebrobasilar arteries is an important underlying pathophysiological mechanism responsible for approximately one-quarter of these ischaemic stroke cases. (bmj.com)
- There are often no symptoms of carotid artery disease until you have a TIA (mini-stroke) or a stroke. (seattleneurosciences.com)
Distal11
- Additionally, flow can be reversed from the PCAs into the distal basilar artery. (medscape.com)
- Embolism, either from a cardiac or arterial source, is much more frequent in the distal third of the basilar artery and the vertebrobasilar junction. (medscape.com)
- however, ligation (at the C1-C2 level) and bypass to the distal (V3 segment) vertebral artery may be indicated. (medscape.com)
- Reconstruction of the distal (V3 segment) vertebral artery is usually performed at the C1-C2 level. (medscape.com)
- and (3) transposition of the distal vertebral artery to the side of the distal internal carotid artery. (medscape.com)
- Reconstruction at this level is limited to saphenous vein bypass from the distal internal carotid artery. (medscape.com)
- Dynamic provocative fluoroscopy failed to reveal significant Vertebral osseous instability (Figure 2A), however, Transcranial Doppler Flow velocities in the distal right Vertebral and Basilar Artery are markedly reduced during Extension of the Neck (Figure 2B). (nspc.com)
- The right Vertebral Artery is the codominant primary supply to the basilar circulation with reflux into the distal left Vertebral Artery that is occluded (Figure 3). (nspc.com)
- Distal radial artery ligation has also been used for patients with distal radiocephalic AVFs. (diaridelsestudiants.com)
- Proximal shunting is attributed to the reversal of blood flow through distal arteries, induced by the low-pressure system produced by the arteriovenous connection. (diaridelsestudiants.com)
- She underwent a Revascularisation Using Distal Inflow procedure which involved ligating the fistula at its origin and extending the inflow for the fistula distally to the radial artery in the midforearm using a segment of the upper arm cephalic vein as the conduit, thus reducing flow in the fistula. (diaridelsestudiants.com)
Stents2
- Background While a growing number of reports offer evidence for the potential of drug eluting stents (DES) in treating atherosclerotic stenosis of the extracranial vertebral artery, their efficacy when compared with bare metal stents (BMS) is uncertain due to the lack of a large prospective randomized trial. (bmj.com)
- Endovascular treatment (EVT) of vertebral artery (VA) stenosis with the use of stents is a promising option and is widely implemented in clinical practice. (bmj.com)
Cerebral7
- For the majority of subclavian lesions, vertebral protection is not necessary, because retrograde flow is typically protective for embolization into the cerebral circulation. (thoracickey.com)
- The posterior circulation is supplied by the vertebral arteries that combine to form the basilar artery which then divides into the posterior cerebral arteries . (radiopaedia.org)
- Most aneurysms occur singly with the most frequent sites being the circle of Willis and the bifurcation of the middle cerebral artery. (patient.info)
- They are more frequent in the territory of the basilar and middle cerebral artery. (patient.info)
- caused by a septic degeneration of the elastic and muscular layer of the cerebral arteries. (patient.info)
- Cerebral angiography (carotid angiogram) - This procedure is considered the gold standard for imaging the carotid arteries. (seattleneurosciences.com)
- Cerebral angiography allows the doctor to see narrowing or blockages on a live X-ray screen as contrast dye is injected in the carotid arteries. (seattleneurosciences.com)
Ischemia4
- Patients with symptomatic vertebrobasilar ischemia who cannot be treated with surgery or investigational endoluminal therapy may be treated medically with antiplatelet agents or with long-term anticoagulation to prevent thrombosis. (medscape.com)
- Sometimes it is preceded by the CCT, otitis media, ischemia in vertebrobasilar the pool, but in half of the cases the reason of finding out is not possible. (md-tips.com)
- The influence of hypoperfusion in vertebrobasilar territory (VBT) on characteristics of cognitive functions in 52 patients with chronic brain ischemia was studied. (theunj.org)
- 4 5 However, both the Vertebral Artery Stenting Trial (VAST) 6 7 and the Vertebral Artery Ischemia Stenting Trial (VIST) 8 9 have failed to demonstrate the superiority of stenting in preventing recurrent strokes in patients with symptomatic VA stenosis compared with optimal medical management. (bmj.com)
Basilar arteries1
- VBI occurs when the vertebral and basilar arteries' blood flow that supply the hindbrain are restricted. (portmelbournephysio.com.au)
Right vertebral5
- The right vertebral artery was normal when the head was rotated to either the right or the left. (nih.gov)
- Retrograde flow into the post PICA left Vertebral Artery is observed from the co-dominant right Vertebral Artery which appears to be the primary supply into the basilar circulation. (nspc.com)
- During neutral positioning, the vertebrobasilar circulation fills briskly from the Right Vertebral Artery. (nspc.com)
- The patient then underwent intraoperative angiography of the right Vertebral Artery performed via a 5 French Right Radial Artery access. (nspc.com)
- Computed tomographic angiography (CTA) showed that left vertebral artery was dominant and right vertebral artery was hypoplastic ( Fig. 1 ). (e-neurospine.org)
Vertigo2
- After surgery, vertigo of the patient was disappeared, and angiography showed patent left vertebral artery when her head was rotated to right side. (e-neurospine.org)
- Vertigo caused by compression of cervical vertebral artery could be treated by decompression without fusion or instrumentation, especially in C1 transverse foramen. (e-neurospine.org)
Arterial7
- The disease is defined as the narrowing and hardening of the arteries as a result of plaque buildup around the arterial wall. (baahkast.com)
- History of arterial hypertension ( p =0.007), smoking ( p =0.03), as well as hemodynamically significant stenosis of IA ( p =0.000) had statistically significant effect on the dynamics of initial cerebrovascular insufficiency. (angiol.ru)
- At the initial degree of IA stenosis up to 50% and 50-69%, patients should be recommended to correct any risk factors (primarily diabetes, smoking, hypercholesterolemia, arterial hypertension), and to undergo duplex scanning of the brachiocephalic arteries with a frequency of 1-2 times a year. (angiol.ru)
- An arterial aneurysm is a localised abnormal dilatation of an artery due to a weakness in the arterial wall. (patient.info)
- True arterial aneurysms involve all three layers of the artery wall (intima, media and adventitia). (patient.info)
- Congenital saccular: arterial dilatations of less than 2.5 mm that appear in the bifurcation of the arteries of the circle of Willis. (patient.info)
- In about 25% of cases, there is co-existing arterial occlusive disease in the renal or lower extremity arteries. (patient.info)
Extracranial3
- Analyses were performed for vertebral stenosis at any location and separately for extracranial and intracranial stenoses. (duke.edu)
- INTERPRETATION: Stenting for vertebral stenosis has a much higher risk for intracranial, compared with extracranial, stenosis. (duke.edu)
- Participants with symptomatic vertebral stenosis ≥50% were randomly assigned (1:1) to vertebral angioplasty/stenting plus BMT or to BMT alone with randomization stratified by site of stenosis (extracranial vs intracranial). (ox.ac.uk)
Lesions7
- The main option for treating offending ostial lesions (V1 segment) is transposition of the proximal vertebral artery onto the common carotid artery. (medscape.com)
- Extrinsic lesions can be corrected to relieve kinking or compression of the artery. (medscape.com)
- to study the natural history of atherosclerotic lesions of the innominate artery (IA) and to identify factors influencing the disease progression. (angiol.ru)
- In hemodynamically significant lesions surgical intervention is absolutely indicated regardless of the initial degree of cerebrovascular insufficiency, followed by optimal drug therapy and correction of risk factors. (angiol.ru)
- Beloyartsev D.F., Polyansky D.V., Adyrkhaev Z.A., Timina I.E. Natural history of atherosclerotic lesions of the innominate artery. (angiol.ru)
- In the progression of atherosclerotic lesions of the brachiocephalic arteries, disturbances occur interdependently in the venous system, its extra- and intracranial sections. (angiol.ru)
- The patients were split into two groups by DUS scan findings: 1 - those having structural lesions in vertebral arteries (VA), and haemodynamically significant disorders in VBT and 2 - those having none. (theunj.org)
Angiography5
- Dynamic angiography revealed that the left vertebral artery was smaller than the right, terminated in a branch of the posteroinferior cerebellar artery, and was stretched and completely occluded at the C1-C2 level with the head rotated 45 degrees to the right. (nih.gov)
- Angiography was then again repeated showing good flow through the Vertebral Artery. (nspc.com)
- Angiography showed complete obliteration of blood flow of left vertebral artery when her head was rotated to right side. (e-neurospine.org)
- Magnetic resonance angiography (MRA) - This imaging technique uses a powerful magnet (an MRI) to gather accurate information about the brain and arteries. (seattleneurosciences.com)
- Computerized tomography angiography (CTA) - More detailed than an X-ray, a CT uses X-rays and computer technology to produce cross-sectional images of the carotid arteries. (seattleneurosciences.com)
Patients5
- Although outcomes continue to be poor in patients with basilar artery thrombosis, advances in pharmacologic and mechanical thrombolysis and in endovascular therapy may reduce the mortality and disability rates associated with this disease. (medscape.com)
- METHODS: We did a preplanned pooled individual patient data analysis of three completed randomised controlled trials comparing stenting with medical treatment in patients with symptomatic vertebral stenosis. (duke.edu)
- Educational Goals: Learners will be able to recognize the symptoms that may suggest Vertebral-Basilar Insufficiency, and appropriately refer these patients to appropriate imaging, testing, and subspecialist for urgent management and treatment. (nspc.com)
- Recurrence of symptoms of vertebrobasilar insufficiency was noted in 14% initially symptomatic patients. (annaly-nevrologii.com)
- Objectives Endovascular treatment strategies to optimise individualised care for patients with vertebral artery (VA) stenosis need to be revisited. (bmj.com)
Anterior inferi1
- The branch of the basilar artery with the larger circumference is the anterior inferior cerebellar artery. (medscape.com)
Atherosclerotic3
- Atherosclerotic occlusive disease predominantly affects the midsegment of the basilar artery, followed by the vertebrobasilar junction. (medscape.com)
- Carotid artery stenosis is a chronic atherosclerotic disease resulting in narrowing of the common and internal carotid arteries. (lecturio.com)
- to evaluate the effectiveness of transluminal angioplasty with stenting in the treatment of atherosclerotic stenosis of the vertebral arteries (VA) proximal segment. (annaly-nevrologii.com)
Stenting5
- Scholars@Duke publication: Stenting for symptomatic vertebral artery stenosis: a preplanned pooled individual patient data analysis. (duke.edu)
- Vertebral artery stenosis can be treated with stenting with good technical results, but whether it results in improved clinical outcome is uncertain. (duke.edu)
- We aimed to compare vertebral stenting with medical treatment for symptomatic vertebral stenosis. (duke.edu)
- Stenting for symptomatic vertebral artery stenosis: The Vertebral Artery Ischaemia Stenting Trial. (ox.ac.uk)
- OBJECTIVE: To compare in the Vertebral Artery Ischaemia Stenting Trial (VIST) the risks and benefits of vertebral angioplasty and stenting with best medical treatment (BMT) alone for symptomatic vertebral artery stenosis. (ox.ac.uk)
Cervical3
- Vertebral artery strains during high-speed, low amplitude cervical spinal manipulation. (thieme-connect.com)
- Atlantoaxial instability: C1 and C2 hypermobility causes cervical spine instability and artery, vein, and nerve compression. (caringmedical.com)
- We will sit with the patient and their spouse or partner and then tell them that we believe many of their symptoms are coming from compression of their jugular vein, the compression is being caused by pressure from the cervical vertebrae or a problem with the styloid process at the base of the skull and possible carotid artery syndrome. (caringmedical.com)
Spinal1
- Internal Carotid Artery Strains During High-Speed, Low-Amplitude Spinal Manipulations of the Neck. (thieme-connect.com)
Neck7
- CTA of the neck and brain reveal that the left Vertebral Artery is completely occluded at approximately the C1-C2 level with extensive hypertrophic degenerative osseous changes from C1-C3. (nspc.com)
- Medical conditions - Some medical conditions like connective tissue diseases, migraine headaches, carotid artery disease and neck or back trauma may increase the risk of developing VBA. (wetlab.org)
- First diagnosed angiographically in the early 1960s, SSS is now most commonly diagnosed during Doppler ultrasound (US) examination of the neck arteries. (baahkast.com)
- In the neck, two vertebral arteries join to form the basilar artery, which enters the skull. (medlineplus.gov)
- Located in the neck, the vertebral arteries supply blood to the brain and can be torn by stretching and sudden force applied during a neck adjustment. (edzardernst.com)
- Your doctor may listen to the arteries in your neck with a stethoscope. (seattleneurosciences.com)
- Carotid endarterectomy is the removal of plaque from the carotid artery through an incision in the neck. (seattleneurosciences.com)
Complications1
- Vertebral artery reconstruction can be performed successfully with fewer ischemic complications than carotid artery surgery and with durable long-term results. (medscape.com)
Syndrome1
- Subclavian steal syndrome can also affect the arteries that carry blood toward a person's arm. (diaridelsestudiants.com)
Circulation3
- The basilar artery is the most important artery in the posterior circulation. (medscape.com)
- The differential for vertebrobasilar insufficiency is wide and can be caused by posterior circulation infarcts, steal-type phenomena, or other systemic causes. (bvsalud.org)
- Due to the anastomotic circle of Willis , the posterior circulation connects via the posterior communicating arteries to the anterior circulation . (radiopaedia.org)
Carotid arteries7
- Changes in the structural and functional parameters of the internal jugular veins with varying degrees of stenosis of the carotid arteries were studied in fragments. (angiol.ru)
- To study the venous outflow through the internal jugular veins at different degrees of the internal carotid arteries stenosis. (angiol.ru)
- Carotid Artery Stenosis is a narrowing of the common and internal carotid arteries Arteries Arteries are tubular collections of cells that transport oxygenated blood and nutrients from the heart to the tissues of the body. (lecturio.com)
- The carotid arteries are two large blood vessels that deliver blood to your brain. (seattleneurosciences.com)
- This image shows areas where plaque commonly builds up inside the carotid arteries. (seattleneurosciences.com)
- Carotid ultrasound - Also known as a carotid vertebral duplex exam, this noninvasive, painless screening test uses ultrasound to view the carotid arteries. (seattleneurosciences.com)
- It is an invasive procedure that lets a doctor see blood flow through the carotid arteries in real time. (seattleneurosciences.com)
Compression1
- Compression in the carotid triangle - the arteries and veins. (caringmedical.com)
METHODS2
- Several reports suggested various treatment methods such as conservative management, surgical decompression of vertebral artery and endovascular treatment 2) . (e-neurospine.org)
- The diagnosis of the main disease-causing vestibular violations, requires a detailed examination of the patient with the use of audiometry, ultrasound dopplerography of vertebral arteries, computed tomography of the brain and other modern methods of examination. (md-tips.com)
Radial Artery1
- When to use a proximal radial artery fistula? (diaridelsestudiants.com)
Tomography1
- Three-dimensional enhanced computed tomography with the head rotated 45 degrees to the right revealed that the left vertebral artery was stretched and occluded by dislodgment between C1 and C2. (nih.gov)
Ultrasound1
- Carotid artery stenosis is commonly diagnosed via carotid duplex ultrasound. (lecturio.com)
Vascular1
- On rotation to the right, the patient experiences slightly more moderate symptoms, however no significant Vertebral Artery or vascular reduction flow was observed. (nspc.com)
Doppler1
- OBJECTIVE: To observe the therapeutic effect of acupuncture plus Ligustrazine on vertebrobasilar insufficiency (VBI) by transcranial Doppler (TCD) sonography. (ocom.edu)
Rotation1
- On rotation to the left, the patient experienced mild symptoms, however no significant Vertebral Artery or basilar reduction in flow was observed. (nspc.com)
Blood10
- Normally, the blood flows in an anterograde fashion from the vertebral arteries to the basilar artery up to its terminal branches. (medscape.com)
- Vertebrobasilar insufficiency is a condition in which there is poor blood flow to the posterior portion of the brain. (physiociti.com)
- The blood flow velocity (BFV) of vertebral artery (VA) and basilar artery (BA) in systole before and after treatment was measured with TCD and therapeutic effects were evaluated after 10 days' treatment in the two groups. (ocom.edu)
- This test is typically performed after a CT or MRI scan shows that the internal carotid artery, one of the main blood vessels that supply blood to the brain, is severely narrowed or blocked. (wetlab.org)
- Vertebrobasilar circulatory disorders are conditions in which the blood supply to the back of the brain is disrupted. (medlineplus.gov)
- The areas in the back of the brain that receive blood from these arteries are needed to keep a person alive. (medlineplus.gov)
- The blood passes through the arteries in order of decreasing luminal diameter, starting in the largest artery (the aorta) and ending in the small arterioles. (lecturio.com)
- If an abnormal sound, called a bruit, is heard over an artery, it may reflect turbulent blood flow, which could indicate carotid artery disease. (seattleneurosciences.com)
- It looks for plaques and blood clots and determines whether the arteries are narrowed or blocked. (seattleneurosciences.com)
- Then, the artery is sewn back together, allowing improved blood flow to the brain. (seattleneurosciences.com)
Fusiform1
- The artery wall can balloon out symmetrically to form a 'fusiform' aneurysm or there can be a local 'blow-out' to form a 'saccular' aneurysm. (patient.info)
Arterioles1
- Arteries are classified into 3 types: large elastic arteries, medium muscular arteries, and small arteries and arterioles. (lecturio.com)
Angioplasty1
- False aneurysms may arise following angiogram, angioplasty or at the join between a graft and the artery. (patient.info)
Segment1
- The most common indication for exposure of the V3 segment of the artery is for control of hemorrhage. (medscape.com)
Lateral2
- It normally arises at the junction of the proximal and middle third of the basilar artery and supplies the lateral pontine tegmentum, brachium pontis or middle cerebellar peduncle, flocculus, and a small part of the anterior cerebellum. (medscape.com)
- Proximal to its bifurcation into the terminal branches (ie, PCA), the basilar artery gives off the superior cerebellar arteries that supply the lateral aspect of the pons and midbrain and the superior surface of the cerebellum. (medscape.com)