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vertebral artery stenosis

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https://www.readbyqxmd.com/read/28329264/bow-hunter-syndrome-elicited-by-vertebral-arterial-occlusion-after-total-arch-replacement
#1
Hiroto Kitahara, Tomohiro Takeda, Kazumi Akasaka, Hiroyuki Kamiya
An 83-year-old man with arch aneurysm underwent total arch replacement with frozen elephant trunk and extra-anatomical left subclavian artery bypass. One year later, he felt dizziness associated with head rotation. The hypoplastic left vertebral artery was occluded by a thrombus extending from the left subclavian artery ligation site, and the dynamic stenosis of right vertebral artery by head rotation induced dizziness. He was diagnosed with Bow Hunter syndrome. Vertebral artery hypoplasia represents a possible cause of this rare complication...
January 31, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28328808/vertebrobasilar-system-computed-tomographic-angiography-in-central-vertigo
#2
Lale Paşaoğlu
The incidence of vertigo in the population is 20% to 30% and one-fourth of the cases are related to central causes. The aim of this study was to evaluate computed tomography angiography (CTA) findings of the vertebrobasilar system in central vertigo without stroke.CTA and magnetic resonance images of patients with vertigo were retrospectively evaluated. One hundred twenty-nine patients suspected of having central vertigo according to history, physical examination, and otological and neurological tests without signs of infarction on diffusion-weighted magnetic resonance imaging were included in the study...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28321414/medical-and-interventional-therapy-for-spontaneous-vertebral-artery-dissection-in-the-craniocervical-segment
#3
Guiyun Zhang, Zuoquan Chen
Background and Purpose. Spontaneous vertebral artery dissection (SVAD) is an important reason for posterior-circulation-ischemic stroke in the young and middle-aged population. Although some previous reports reveal a favorable outcome with conservative therapy, it is still controversial in the treatment of SVAD in some specific patients. Herein, we present our 10 years of clinical experience for SVAD at this location. Material and Methods. 20 patients with 20 SVADs in V2 and V3 segments were retrospectively studied...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28304206/restenosis-after-stenting-in-symptomatic-vertebral-arterial-orifice-disease-and-considerations-for-better-outcome
#4
Jun Young Chang, Hyun Park, Oki Kwon, Moon-Ku Han
We have performed stenting in 11 patients with symptomatic vertebral arterial orifice stenosis refractory to medical treatment or impairment in anterior circulation. Three of the 11 patients experienced asymptomatic severe in-stent restenosis or occlusion. Bare metal stents were used in those three patients, two of whom received revascularization therapy. Development of sufficient cervical collateral channels reconstituting the distal vertebral artery was the common feature in patients with asymptomatic in-stent restenosis...
April 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28300680/evaluation-by-mri-of-silent-brain-infarcts-in-pre-and-post-operative-asymptomatic-carotid-surgery
#5
Remy Pascot, Anne Daoudal, Alain Cardon, Gilles Godet, Antoine Lucas, Elodie Clochard, Jean-Yves Gauvrit, Yann Le Teurnier, Adrien Kaladji
OBJECTIVE: To report the prevalence of Silent Brain Infarcts (SBI) at MRI before and after surgery for asymptomatic high grade carotid stenosis. DESIGN: Single-center retrospective observational study METHODS: Asymptomatic patients who underwent carotid endarterectomy between October 2012 and October 2014 were included. The preoperative assessment included a Doppler and a CT scan dating less than 3 months. A neurological examination was performed during the anesthesia consultation and in the 15 days before surgery...
March 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28300678/magnetic-resonance-imaging-of-internal-jugular-veins-in-multiple-sclerosis-inter-observer-agreement-and-comparison-with-doppler-ultrasound-examination
#6
S J Laukontaus, J Pekkola, J Numminen, T Kagayama, M Lepäntalo, M Färkkilä, S Atula, P Tienari, M Venermo
OBJECTIVES: Doppler ultrasound (US) has been widely used to evaluate the cervical venous system of multiple sclerosis (MS) patients according to the hypothesis of chronic cerebrospinal venous insufficiency (CCSVI) with contradictory results. Venous anatomy and pathology can be examined with less operator-dependent magnetic resonance imaging (MRI). DESIGN: To assess the inter-observer agreement in measuring internal jugular vein (IJV) cross-sectional area (CSA) in MR-images and to explore the agreement between US and MRI in the detection of calibres of ≤ 0...
March 11, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28284683/endovascular-treatment-of-vertebral-artery-stenosis
#7
REVIEW
J Stephen Jenkins, Merrill Stewart
Endovascular treatment of vertebral artery stenosis (VAS) is a safe and effective technique for treating symptoms caused by posterior circulation ischemia with high technical and clinical success rates, low complication rates and durable long-term results. Variable restenosis rates have been reported in the literature with small improvements demonstrated using drug eluting stents. Although there is insufficient evidence from randomized trials to demonstrate superiority of endovascular compared to optimal medical therapy for the treatment of this disease, patients who fail medical therapy should be considered for endovascular stenting for symptomatic VAS...
March 8, 2017: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/28280639/delayed-stroke-following-blunt-neck-trauma-a-case-illustration-with-recommendations-for-diagnosis-and-treatment
#8
Best Anyama, Daniela Treitl, Jeffery Wessell, Rachele Solomon, Andrew A Rosenthal
Blunt cerebrovascular injury (BCVI) to the carotid artery is a relatively rare injury that is difficult to identify even with imaging. Any symptoms or neurological deficits following blunt neck injury mandate evaluation and consideration of BCVI. In an effort to highlight this issue, we report the case of a 31-year-old male patient who presented with left-sided weakness consistent with transient ischemic attack (TIA) and concussion. The patient's symptoms occurred within 24 hours of a blunt neck injury sustained by a knee strike during a basketball game...
2017: Case Reports in Emergency Medicine
https://www.readbyqxmd.com/read/28273361/transcatheter-aortic-valve-implantation-improves-carotid-and-vertebral-arterial-blood-flow-in-patients-with-severe-aortic-stenosis-practical-role-of-orthostatic-stress-test
#9
Pawel Kleczyński, Pawel Petkow Dimitrow, Artur Dziewierz, Andrzej Surdacki, Dariusz Dudek
BACKGROUND: There are no data on the impact of transcatheter aortic valve implantation (TAVI) on carotid and vertebral arterial blood flow. Our aim was to assess the effects of the orthostatic stress test on carotid and vertebral artery blood flow in patients with severe aortic stenosis (AS) undergoing TAVI. HYPOTHESIS: TAVI may have beneficial effect on carotid and vertebral artery flow in patients with severe aortic stenosis. METHODS: Thirty carefully selected patients with severe AS undergoing TAVI were enrolled...
March 8, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28251330/oculo-auriculo-vertebral-spectrum-going-beyond-the-first-and-second-pharyngeal-arch-involvement
#10
Brotto Davide, Manara Renzo, Ghiselli Sara, Lovo Elisa, Mardari Rodica, Toldo Irene, Castiglione Alessandro, Schifano Giovanni, Stritoni Valentina, Bovo Roberto, Trevisi Patrizia, Martini Alessandro
INTRODUCTION: Intracranial vascular, bone, and brain abnormalities might be observed in oculo-auriculo-vertebral spectrum (OAVS) patients even though these structures do not derive embryologically from the first and second pharyngeal arches. This neuroimaging study investigated their type, frequency and phenotype correlations among OAVS patients. METHODS: Thirty-five OAVS patients (mean-age 4.8 ± 6.0 years; age range 0.3-30, 14 females) underwent head CT (all patients) and brain MRI (32 patients); 19 patients had a more severe phenotype (Goldenhar syndrome)...
March 1, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28222983/validation-of-subclavian-duplex-velocity-criteria-to-grade-severity-of-subclavian-artery-stenosis
#11
Albeir Y Mousa, Ramez Morkous, Mike Broce, Michael Yacoub, Andrew Sticco, Ravi Viradia, Mark C Bates, Ali F AbuRahma
BACKGROUND: Validation of subclavian duplex ultrasound velocity criteria (SDUS VC) to grade the severity of subclavian artery stenosis has not been established or systematically studied. Currently, there is a paucity of published literature and lack of practitioner consensus for how subclavian duplex velocity findings should be interpreted in patients with subclavian artery stenosis. OBJECTIVE: The objective of the present study was to validate SDUS measurements using subclavian conventional or computed tomography angiogram (subclavian angiogram [SA])-derived measurements...
February 17, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/28219575/how-to-clamp-and-bypass-if-there-is-single-artery-supply-to-the-head-and-that-contains-severe-stenosis
#12
Murat Ugurlucan, Yilmaz Onal, Didem Melis Oztas, Omer Ali Sayin, Kubilay Aydin, Ufuk Alpagut
Takayasu arteritis manifests with arterial occlusions and aneurysms. Revascularization is sometimes challenging, especially when carotid arteries are affected. In this report, we present a carotid artery revascularization technique in a patient who was admitted with orthostatic and postprandial transient ischemic attacks, resulting in a diagnosis of bilaterally occluded subclavian and vertebral arteries, occluded left common carotid artery, and severely stenosed right common carotid artery. Clamping of the right carotid artery was a challenge; however, our technique provides a neurologically safe revascularization...
March 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28196941/histopathological-differences-between-the-anterior-and-posterior-brain-arteries-as-a-function-of-aging
#13
William Roth, Susan Morgello, James Goldman, Jay P Mohr, Mitchell S V Elkind, Randolph S Marshall, Jose Gutierrez
BACKGROUND AND PURPOSE: We tested the hypothesis that posterior brain arteries differ pathologically from anterior brain arteries and that this difference varies with age. METHODS: Brain large arteries from 194 autopsied individuals (mean age 56±17 years, 63% men, 25% nonwhite, 17% with brain infarcts) were analyzed to obtain the areas of arterial layers and lumen as well as the relative content of elastin, collagen, and amyloid. Visual rating was used to determine the prevalence of atheroma, calcification, vasa vasorum, pattern of intima thickening, and internal elastic lamina gaps...
March 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28192264/balloon-angioplasty-for-in-stent-restenosis-resulting-in-carotid-stent-fracture-with-literature-review-of-stent-in-stent-technique-as-a-viable-therapeutic-option
#14
Abdul-Haseeb Naeem, Ghaya Al-Rumaihi, Amirpouyan Namavarian, Manas Sharma, Melfort Boulton
BACKGROUND: Carotid stent fractures are rare and multiple etiologies have been proposed to explain their occurrence. We present a patient with a internal carotid artery (ICA) stent who developed in-stent restenosis. We performed balloon angioplasty to address in-stent restenosis but post-procedure he developed a carotid stent fracture. To our knowledge, balloon angioplasty has not been reported to cause stent fractures and we report the first case report. CASE DESCRIPTION: 72-year-old male underwent stenting for symptomatic left ICA stenosis with post-stenting residual stenosis of 55%...
February 9, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28191625/iatrogenic-vascular-injuries-due-to-spinal-surgeries-endovascular-perspective
#15
Mustafa Gok, Elcin Aydin, Serkan Guneyli, Ali Akay, Celal Cinar, Ismail Oran
AIM: Iatrogenic vascular injuries due to spinal surgeries are rare but serious complications. Surgical management of these injuries is challenging with high morbidity rates. In this study we aim to present the results of endovascular management of iatrogenic vascular injuries due to spinal surgeries. MATERIAL AND METHODS: We retrospectively reviewed 11 patients (5 male, 6 female) who had vascular injuries due to cervical and lumbar spinal surgeries. Clinical findings were bleeding (n=5), leg edema (n=6) and right heart failure with severe dyspnea (n=1)...
January 17, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28157748/large-artery-atherosclerotic-occlusive-disease
#16
John W Cole
PURPOSE OF REVIEW: Extracranial or intracranial large artery atherosclerosis is often identified as a potential etiologic cause for ischemic stroke and transient ischemic attack. Given the high prevalence of large artery atherosclerosis in the general population, determining whether an identified atherosclerotic lesion is truly the cause of a patient's symptomatology can be difficult. In all cases, optimally treating each patient to minimize future stroke risk is paramount. Extracranial or intracranial large artery atherosclerosis can be broadly compartmentalized into four distinct clinical scenarios based upon the individual patient's history, examination, and anatomic imaging findings: asymptomatic and symptomatic extracranial carotid stenosis, intracranial atherosclerosis, and extracranial vertebral artery atherosclerotic disease...
February 2017: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/28100765/acute-transient-vestibular-syndrome-prevalence-of-stroke-and-efficacy-of-bedside-evaluation
#17
Jae-Hwan Choi, Min-Gyu Park, Seo Young Choi, Kyung-Pil Park, Seung Kug Baik, Ji-Soo Kim, Kwang-Dong Choi
BACKGROUND AND PURPOSE: The aim of this study was to determine the prevalence of stroke and efficacy of bedside evaluation in diagnosing stroke in acute transient vestibular syndrome (ATVS). METHODS: We performed a prospective, single-center, observational study that had consecutively recruited 86 patients presenting with ATVS to the emergency department of Pusan National University Yangsan Hospital from January to December 2014. All patients received a constructed evaluation, including HINTS plus (head impulse, nystagmus patterns, test of skew, and finger rubbing) and brain magnetic resonance imagings...
January 18, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28100343/-effect-of-stenting-for-the-proximal-atherosclerotic-extracranial-vertebral-artery-stenosis
#18
W Q Che, X J Jiang, H Dong, M Peng, Y B Zou, L Song, H M Zhang, H L Xiong, H Y Wu
Objective: To evaluate the effect of stenting for proximal atherosclerotic extracranial vertebral artery stenosis. Methods: A total of 204 proximal atherosclerotic extracranial vertebral artery stenosis patients underwent stent implantation at Fuwai Hospital were enrolled consecutively between August 2007 and June 2014 prospectively. Medical records were collected and the clinical results were obtained through outpatient and telephone follow up. Results: (1) The patients were (64.1±7.9) years old, and 179 were male (87...
January 25, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28064332/the-endovascular-treatment-of-bilateral-infarction-of-middle-cerebellar-peduncles-etiology-and-endovascular-treatment-analysis
#19
Qihao Dong, Guoxian Jing, Ju Han
Infarction of the symmetrical middle cerebellar peduncles is often induced by ischemic cerebrovascular disease. Adams described the anterior inferior cerebellar artery (AICA) syndrome as early as 1943, but clinical and imaging studies following this failed to shed more light regarding the condition until the advent of magnetic resonance imaging that comprehension regarding AICA improved significantly. Infarction of the middle cerebellar peduncles (MCP) is uncommon and the endovascular treatment of this condition is even more rare...
January 2017: Neurosciences: the Official Journal of the Pan Arab Union of Neurological Sciences
https://www.readbyqxmd.com/read/28062802/moving-target-transient-rotational-stenosis-precipitating-jugular-bow-hunter-s-syndrome
#20
Waleed Brinjikji, Christopher S Graffeo, Avital Perry, Terence Zimmerman, Jeffrey R Janus, Pearce P Morris, Gregory D Cascino, Giuseppe Lanzino
A 60-year-old man presented with a 10-month history of of stereotypical spells characterized by vertigo, tinnitus, blurred vision, left hemibody numbness, and occasional syncope, precipitated by turning his head leftwards. Cerebral angiography and CT angiography of the head and neck with provocative maneuvers did not demonstrate vertebral artery narrowing. However, there was narrowing of the left internal jugular vein due to extrinsic compression from the sternocleidomastoid with leftward head rotation in the setting of hypoplasia of the right internal jugular vein...
January 6, 2017: Journal of Neurointerventional Surgery
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