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vertebral artery stenosis

Wenxian Li, Youzhen Feng, Weibiao Lu, Xie Xie, Zhilin Xiong, Zhen Jing, Xiangran Cai, Li'an Huang
PURPOSE: To determine the morphological changes of intracranial arteries and whole-brain perfusion in undetermined isolated vertigo (UIV) patients using 320-detector row computed tomography (CT). METHODS: A total of 150 patients who underwent CT angiography (CTA) and CT perfusion (CTP) imaging were divided into UIV group and benign paroxysmal positional vertigo (BPPV) group. Sixty individuals with sex- and age-matched without vertigo and cerebral diseases served as the control...
November 15, 2016: Journal of the Neurological Sciences
Kazuyuki Shimada
Stroke is known to frequently recur in patients with a history of cerebrovascular disease, and the control of hypertension is extremely important for the treatment of those patients. The robust relationship between the recurrent cerebrovascular disease and blood pressure control has been demonstrated in large-scale clinical studies. The antihypertensive drug therapy significantly reduces the recurrence rate of all types of cerebrovascular disease, incidences of myocardial infarction and all vascular events...
September 2016: Journal of Hypertension
Dao Pei Zhang, Gui Feng Lu, Jie Wen Zhang, Shu Ling Zhang, Qian Kun Ma, Suo Yin
BACKGROUND: We aimed in this study to investigate the prevalence of vertebral artery hypoplasia (VAH) in a population with isolated vertigo in association with stroke risk factors, to determine whether VAH is an independent risk factor for posterior circulation infarction (PCI). METHODS: We sequentially enrolled 245 patients with isolated vertigo with at least 1 vascular risk factor, who were divided into PCI and non-PCI groups, according to present signs of acute infarction on diffusion-weighted magnetic resonance imaging...
October 13, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Seung Chai Jung, Ho Sung Kim, Choong-Gon Choi, Sang Joon Kim, Sun U Kwon, Dong-Wha Kang, Jong S Kim
PURPOSE: The aim of this article is to present high-resolution magnetic resonance imaging (HR-MRI) findings of chronic stage spontaneous and unruptured intracranial artery dissection (ICAD). MATERIAL AND METHODS: From March 2012 to April 2016 a total of 29 patients (15 male and14 female, age range 37-68 years) with chronic stage spontaneous and unruptured ICAD (vertebral artery 27, posterior inferior cerebellar artery 1 and middle cerebral artery 1) were retrospectively enrolled...
September 27, 2016: Clinical Neuroradiology
Joan Martí-Fàbregas, Sebastián Figueroa, Eva Martínez-Lizana, Irati Zubizarreta, David Carrera, Alejandro Martínez-Domeño, Luis Prats-Sánchez, Pol Camps-Renom, Elena Jiménez-Xarrié, Raquel Delgado-Mederos
Chronic hypoperfusion may hinder the washout of emboli coming from the heart and facilitate the formation of intra-cavitary thrombi. We investigated whether a decreased total cerebral blood flow (tCBF) resulted in recurrence of stroke and other vascular events in consecutive patients with cardioembolic stroke. We excluded patients with extra-cranial carotid or vertebral stenosis. The recorded tCBF was the sum of blood flow in both the carotid and vertebral extra-cranial arteries as measured with ultrasonography...
September 17, 2016: Ultrasound in Medicine & Biology
Xiaodan Wei, Zhuang Liu, Min Li, Chunhua Yang, Wenming Wang, Xianglin Li, Shuping Zhang, Xuri Li, Geng Tian, Jonas Bergquist, Bin Wang, Jia Mi
BACKGROUND: The severity of ischemic stroke symptoms varies among patients and is a critical determinant of patient outcome. To date, the association between the number of stenotic intracranial arteries and stroke severity remains unclear. AIMS: We aimed to investigate the association between the number of stenotic major intracranial arteries (NSMIA) and ischemic stroke severity, as well as the degree of stenosis and common stroke risk factors. METHODS: We performed a retrospective analysis of patients with digital subtraction angiography (DSA)-confirmed ischemic stroke...
2016: PloS One
Abdolhamid Shariat, Leila Niknam, Sadegh Izadi, Alireza Salehi
BACKGROUND: The aim of this study is to determine the frequency of intracranial artery stenosis in patients with acute ischemic stroke in Iran. METHODS: A total of 169 patients with acute ischemic stroke were eligible to participate and were enrolled in this study from January 2012 to February 2013. All the patients were admitted to the Nemazee ‎Hospital, affiliated to Shiraz University of Medical Sciences, Iran. They underwent transcranial Doppler (TCD) ultrasonography...
July 6, 2016: Iranian Journal of Neurology
Kazuyuki Shimada
Stroke is known to frequently recur in patients with a history of cerebrovascular disease, and the control of hypertension is extremely important for the treatment of those patients. The robust relationship between the recurrent cerebrovascular disease and blood pressure control has been demonstrated in large-scale clinical studies. The antihypertensive drug therapy significantly reduces the recurrence rate of all types of cerebrovascular disease, incidences of myocardial infarction and all vascular events...
September 2016: Journal of Hypertension
Guangxin Duan, Jiaping Xu, Jijun Shi, Yongjun Cao
Bow hunter's syndrome (BHS), also known as rotational vertebral artery (VA) occlusion syndrome, is a rare yet treatable type of symptomatic vertebrobasilar insufficiency resulting from mechanical occlusion or stenosis of the VA during head and neck rotation or extension. The symptoms of BHS range from transient vertigo to posterior circulation stroke. The underlying pathology is dynamic stenosis or compression of the VA by abnormal bony structures with neck rotation or extension in many cases, such as osteophyte, disc herniation, cervical spondylosis, tendinous bands or tumors...
June 2016: Interventional Neurology
Leszek Wrotniak, Anna Kabłak-Ziembicka, Agnieszka Rosławiecka, Piotr Musiałek, Paweł Bogacki, Mariusz Trystuła, Krzysztof Żmudka, Tadeusz Przewłocki
OBJECTIVE: A minor part of patients with subclavian or innominate artery occlusive disease (subclavian artery stenosis [SAS]) experience symptoms of vertebrobasilar insufficiency, upper extremity exertional ischemia (UEEI), or cardiac ischemia owing to subclavian-coronary steal (SCS) in some instances. The study aimed to assess the impact of percutaneous transluminal angioplasty (PTA) of symptomatic SAS on symptom resolution and to determine factors related with SAS recurrence. METHODS: Symptom resolution and incidence of restenosis (RS) were evaluated for up to 15 years in patients who had undergone successful PTA of SAS...
September 2016: Journal of Vascular Surgery
Hongliang Feng, Yi Xie, Bin Mei, Yang Liu, Benlei Li, Changqing Yin, Tao Wang, Yumin Liu
This meta-analysis aims to compare percutaneous transluminal angioplasty (PTA) to medical treatment (MT) for symptomatic vertebral artery stenosis (SVAS) treatment. We searched PubMed, Springer, Google Scholar, Clinical Trials, Cochrane Central, Chinese National Knowledge Infrastructure, and China Biological Medicine databases. All relevant comparative trials were included. All summary estimates were calculated by random-effect models. Ten comparative trials involving 672 patients were identified. Within 30-day follow-up, there was no significant difference between PTA plus MT and MT alone in vascular death, any stroke, posterior circulation TIA, posterior circulation infarction, and ischemic stroke (all P > 0...
August 20, 2016: Journal of Neurology
Hui Fang, Xiang Yan Chen, Bo Song, Bo Cheng, Yu Ming Xu, Ka Sing Wong, Stella Sin Yee Ho
BACKGROUND: Stroke patients with carotid disease have a high risk of recurrent. By measuring cerebral blood flow volume (BFV) using extracranial duplex technique for clinical estimation of intracranial collaterals, we aimed to investigate the relationship between the presence of intracranial collaterals and stroke recurrence in stroke patients with carotid disease. METHODS: Consecutive stroke patients indicated for carotid duplex ultrasound investigations in our hospital were recruited during three years' period...
August 16, 2016: Current Neurovascular Research
José E Cohen, Ronen R Leker, J Moshe Gomori, Roni Eichel, Gustavo Rajz, Samuel Moscovici, Eyal Itshayek
Patients suffering from acute atherothrombotic occlusion of the proximal vertebral artery (VA) and concomitant basilar artery (BA) occlusion present a grim prognosis. We describe our experience in the endovascular recanalization of tandem vertebrobasilar occlusions using endovascular techniques. The BA was accessed through the normal VA (clean-road) or the occluded, thrombotic VA (dirty-road), and stentriever-based thrombectomy was performed using antegrade or reverse revascularization variants. Seven patients underwent successful stentriever-assisted mechanical thrombectomy of the BA and five sustained concomitant VA revascularization...
August 10, 2016: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
E Warchol-Celinska, K Hanus, P Talarowska, E Florczak, K Jozwik-Plebanek, M Januszewicz, I Michalowska, A Prejbisz, W Wojcik, H Janaszek-Sitkowska, M Makowiecka-Ciesla, L Stryczynski, M Protasiewicz, L Swiatlowski, A Niemirska, M Litwitn, T Przewlocki, M Szczerbo-Trojanowska, A Tykarski, A Januszewicz
OBJECTIVE: To present preliminary evaluation of vascular bed involvement and vascular complications in patients with fibromuscular dysplasia (FMD) enrolled to ARCADIA-POL registry. DESIGN AND METHOD: The first 84 patients (59F[70.2%], 25M[29.8%], mean age: 42.5 ± 14.8 years, range:18-72) with confirmed FMD in any vascular bed were enrolled in 2015 in ARCADIA-POL registry (instituted on the basis of as Polish-French collaboration). A standardized FMD data form was used for data collection...
September 2016: Journal of Hypertension
Bikei Ryu, Hidenori Anami, Tatsuya Ishikawa, Tatsuya Inoue, Makoto Sugiura, Takakazu Kawamata
Primitive arteries are persistent fetal anastomoses between the carotid and vertebral-basilar circulation. Although rare, persistent primitive arteries can remain at birth. A 73-year-old woman presented with cerebral infarction to the posterior circulation caused by symptomatic common carotid artery stenosis with an unnamed and extremely rare persistent primitive artery. This anomalous vessel branched from the extracranial internal carotid artery and passed through the ipsilateral jugular foramen into the posterior cranial fossa and merged into the basilar artery...
October 2016: Acta Neurochirurgica
Virginija Gaigalaite, Augenijus Vilimas, Violeta Ozeraitiene, Jurate Dementaviciene, Ricardas Janilionis, Danute Kalibatiene, Saulius Rocka
BACKGROUND: The clinical significance of vertebral artery (VA) hypoplasia is under discussion. The aim of this retrospective study is to evaluate a hypothesis of a possible causal link between VA hypoplasia (VAH) and the incidence of posterior circulation stroke (PCS) or TIA depending on the degree of VAH and vascular risk factors. METHODS: A total of 367 symptomatic (PCS or TIA) and 742 asymptomatic subjects, were selected to participate in the study. The extracranial arteries were examined by ultrasound...
2016: BMC Neurology
Saim Sağ, Ömer Fatih Nas, Ömer Bedir, İbrahim Baran, Sümeyye Güllülü, Bahattin Hakyemez
No abstract text is available yet for this article.
July 2016: Anatolian Journal of Cardiology
Daniella Kadian-Dodov, Heather L Gornik, Xiaokui Gu, James Froehlich, J Michael Bacharach, Yung-Wei Chi, Bruce H Gray, Michael R Jaff, Esther S H Kim, Pamela Mace, Aditya Sharma, Eva Kline-Rogers, Christopher White, Jeffrey W Olin
BACKGROUND: Fibromuscular dysplasia (FMD) is a noninflammatory arterial disease that predominantly affects women. The arterial manifestations may include beading, stenosis, aneurysm, dissection, or tortuosity. OBJECTIVES: This study compared the frequency, location, and outcomes of FMD patients with aneurysm and/or dissection to those of patients without. METHODS: The U.S. Registry for FMD involves 12 clinical centers. This analysis included clinical history, diagnostic, and therapeutic procedure results for 921 FMD patients enrolled in the registry as of October 17, 2014...
July 12, 2016: Journal of the American College of Cardiology
Chetan P Huded, Quentin R Youmans, Jyothy J Puthumana, Ranya N Sweis, Mark J Ricciardi, Sukit Chris Malaisrie, Charles J Davidson, James D Flaherty
BACKGROUND: Carotid artery stenosis is a risk factor for stroke after surgical aortic valve replacement, but it is unknown whether carotid and vertebral artery disease impacts the risk of stroke after transcatheter aortic valve replacement (TAVR). METHODS: We reviewed 294 consecutive cases of TAVR at a tertiary care medical centre. Thirty-one patients without preoperative carotid/vertebral duplex ultrasonograms were excluded. Carotid or vertebral artery disease was defined on the basis of >50% stenosis...
March 29, 2016: Canadian Journal of Cardiology
Paweł Kleczyński, Paweł Petkow Dimitrow, Artur Dziewierz, Andrzej Surdacki, Dariusz Dudek
BACKGROUND: Responses of cerebral blood flow to the postural unloading maneuver in aortic stenosis (AS) have not been described so far. Our aim was to assess effects of orthostatic stress test on changes of carotid and vertebral artery blood flow and transaortic gradients. METHODS: From consecutive 101 AS patients we selected 50 patients with severe isolated AS. Maximal and mean transaortic pressure gradients, as well as peak systolic blood-flow velocity (PSV) and end-diastolic velocity (EDV) in the common carotid artery, internal carotid artery and vertebral artery on both sides were measured by duplex ultrasound in the supine position and at 1-2 min after the assumption of the sitting position in patients with AS, and in stand-ing position in healthy controls...
2016: Cardiology Journal
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