Vertebral artery origin stenosis

    • Ultrasound Criteria for Assessment of Vertebral Artery Origins

      CONCLUSION: Ultrasound has good sensitivity and excellent specificity for detecting vertebral origin occlusion. Flow velocity can be used to screen for severe stenosis of vertebral artery at origin. Keywords: ultrasound, vertebral artery, stenosis. Acceptance: Received July 13, 2019, and in revised form October 18, 2019. Accepted for ...

    • Drug-coated balloon for vertebral artery origin stenosis: a pilot study

      Vertebral artery origin stenosis (VAOS) occurs in the ostial segment of the artery (V1 segment), which is the most common site of this stenosis. It can cause posterior circulation related transient ischemic attacks (TIAs), contributing a 25–35% risk of stroke within the next 5 years in symptomatic patients.1

    • [PDF File]Techniques for the diagnosis of vertebral artery origin stenosis and ...

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      Vertebral artery origin stenosis (VAOS) is a treatable cause of posterior circulation stroke in 9–20% of cases. VAOS can cause stroke due to artery–artery thromboembolism or flow-related posterior circulation hypoperfusion. It is recommended to maximize medical treatment of asymptomatic VAOS. Endovascular

    • [PDF File]Treatment of Stenoses of Vertebral Artery Origin Using Short Drug ...

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      In this study, stent placement of vertebral artery stenosis by using short DES was safe and yielded good midterm patency rates. In our experience, short DES, deployed with high pressure and placed with the proximal end as close as possible to the level of the subclavian artery, are less prone to intimal hyperplasia, recurrent stenosis, and ...

    • [PDF File]A rare origin of the right vertebral artery and its clinical ...

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      The Subclavian Steal Syndrome is a retrograde flow in the vertebral artery as a result of proximal subclavian artery occlusion or severe stenosis. This retrograde flow presupposes that the vertebral artery is of usual origin from the superior surface of its ipsilateral subclavian artery.

    • [PDF File]CCA,ECA,Vertebral Any good criteria? - Thomas Jefferson University

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      Prevalence of vertebral artery origin stenosis and occlusion in outpatient extracranial ultrasonography. Sebastian Koch, MD *, Antonio J Bustillo , Bertha Campo , Nelly Campo, MD , Iszet Campo- ... vertebral artery stenosis typically occurs at the origin (VAo) and is the direct cause of 9% of posterior circula- ...

    • [PDF File]Vertebral Artery Origin Stent Placement with

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      vertebral artery origin stenosis by using a distal protection device. Further studies are required to determine the effectiveness of this approach for vertebral artery origin atherosclerosis. A therosclerotic disease of vertebral artery origin is a com-mon cause of ischemic events in the posterior circula-

    • [PDF File]Vertebral(Artery(Origin(Stenosis: EpidemiologyandNatural History

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      artery stenosis (subclavian steal syndrome) who are at high risk of surgical complications. (Level of Evidence: C) • Asymptomatic patients with asymmetrical upper-limb blood pressure, periclavicular bruit, or flow reversal in a vertebral artery caused by subclavian artery stenosis should not undergo revascularization unless the internal

    • [PDF File]Trial Design in Vertebral Artery Origin Stenosis

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      Vertebral artery ostial stent placement for atherosclerotic stenosis in 72 consecutive patients: clinical outcomes and follow-up results • Group 1 - 25 Transient Neurological Deficit • Group 2 - 24 Posterior Circulation Stroke • Group 3 - 13 “High Risk” Asymptomatic • Group 4 - 10 Hemodynamic Stroke From

    • [PDF File]Vertebral artery origin stenosis and its treatment.

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      Vertebral artery origin stenosis (VAOS) is a common entity. Both autopsy and angiographic studies have shown that up to 50% of patients with cardiovascular risk factors have stenosis or occlusion of the vertebral ar-tery origin.1-3 In the New England Posterior Circulation Registry, 20% of patients were found to have VAOS; in

    • [PDF File]Open Access Case Report I Left Vertebral Artery with a Proximal ...

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      Keywords: stenotic vertebral proximal origin; proximal subclavian artery stenosis; retrograde flow in vertebral artery; posterior cerebral ischemic stroke; subclavian steal syndrome. (sss). Introduction (RVA) on the other hand originated from the right common carotid artery The usual origin of the vertebral arteries are from the superior ...

    • Color Doppler Imaging Evaluation of Proximal Vertebral Artery Stenosis

      stenosis of the vertebral artery origin diagnosed with DSA. The exclusion criteria were as follows: severe stenosis or dissection of the intracranial ver - tebral artery or basilar artery (n = 60), > 70% steno - sis of a carotid artery or subclavian artery (n = 139), > 50% stenosis of the contralateral vertebral ...

    • Prevalence and Prognosis of Asymptomatic Vertebral Artery Origin ...

      included patients in whom duplex ultrasound of the carotid artery and vertebral artery had been performed. Patients with symptomatic VAo stenosis or planned revascularization of the carotid artery or vertebral artery were excluded. Data were analyzed with Cox regression; hazard ratios were adjusted for age and vascular risk factors.

    • Vertebral Artery Orifice Stenosis: A Report of 43 Cases from Northwest ...

      Vertebral artery stenotic lesion, particularly at the origin of the vertebral artery, is not uncommon but it is a less studied area. Here we present our endovascular treatment experience in a group of patients with vertebral artery orifice stenosis. We enrolled a group of patients with vertebral artery orifice stenosis who presented

    • [PDF File]CASE REPORT Stenting of the vertebral artery origin with ostium ...

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      Endovascular treatment of vertebral artery (VA) origin stenosis requires placement of some part of the proximal end of the stent within the lumen of the subclavian artery or aorta to provide complete ostial stenosis coverage.1 This configuration may pre-clude access to the stented VA (figure 1) because of

    • Endovascular Treatment of Vertebral Artery Origin Lesions

      of Vertebral Artery Origin Lesions Ankit A. Mahadevia, MD, PhD and Kieran P. J. Murphy, MD Endovascular management of vertebral artery stenosis has been shown to have signifi-cantly better outcomes than surgical therapy or medical therapy alone. The average mortality is zero and morbidity is about 1%. There is a 97% procedural success rate. The

    • Vertebral artery stenosis: long-term follow-up.

      proven vertebral artery (VA) stenosis. Little informa-tion is available regarding the natural history of pa-tients with VA occlusive disease. Previous studies sug-gest that stenosis of the distal VA is more dangerous than stenosis at the VA origin, and that hemodynamic factors may be more important than emboli in produc-

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