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https://www.readbyqxmd.com/read/28748256/bioresorbable-vascular-scaffolds-in-interventional-neuroradiology
#1
Anil Arat, Ergun Daglioglu, Ilkay Akmangit, Ahmet Peker, Murat Arsava, Mehmet Akif Topcuoglu, Deniz Belen
PURPOSE: Bioresorbable vascular scaffolds (BVS) have changed practice patterns in cardiology. These resorbable stents have not yet been utilized in the cerebrovascular circulation. We report the initial experiences with these devices in interventional neuroradiology. METHODS: A retrospective review of clinical presentations, imaging findings and follow-up results of all patients treated using a BVS by our neurovascular team was carried out using hospital electronic charts and the hospital radiographic archive system...
July 26, 2017: Clinical Neuroradiology
https://www.readbyqxmd.com/read/28743241/complete-ophthalmoplegia-complete-ptosis-and-dilated-pupil-due-to-internal-carotid-artery-dissection-as-the-first-manifestation-of-takayasu-arteritis
#2
H M M T B Herath, S P Pahalagamage, D Withana, Sunethra Senanayake
BACKGROUND: Takayasu arteritis is a rare, chronic large vessel vasculitis involving the aorta and its primary branches. As the disease progresses, the active inflammation of large vessels leads to dilation, narrowing and occlusion of the arteries. Arterial dissection is due to separation of the layers of the arterial wall resulting in a false lumen, where blood seeps into the vessel wall. Neurological sequelae of intracranial arterial dissection results from cerebral ischemia due to thromboembolism and hypo perfusion...
July 25, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28739521/effective-intraluminal-shunt-in-carotid-endarterectomy-for-carotid-artery-near-occlusion-a-technical-report
#3
Yoichiro Kawamura, Daisuke Maruyama, Yojiro Akagi, Koji Iihara
BACKGROUND: Carotid artery near occlusion is a critical degree of stenosis whereby blood flow is decreased and the distal cervical and intracranial internal carotid arteries (ICAs) are prone to collapse. Considering the diminished perfusion and the risk of progression to total occlusion and periocclusive embolism, we performed carotid endarterectomy (CEA) for carotid artery near occlusion. METHODS: Accurate evaluation of tandem stenosis or patency of the post-stenotic ICA in carotid artery near occlusion is often difficult preoperatively...
July 21, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28734662/transient-global-cerebral-ischemia-induces-rnf213-a-moyamoya-disease-susceptibility-gene-in-vulnerable-neurons-of-the-rat-hippocampus-ca1-subregion-and-ischemic-cortex
#4
Mika Sato-Maeda, Miki Fujimura, Sherif Rashad, Yuiko Morita-Fujimura, Kuniyasu Niizuma, Hiroyuki Sakata, Shuntaro Ikawa, Teiji Tominaga
The RING finger protein 213 (RNF213) is an important susceptibility gene for moyamoya disease (MMD) and is also implicated in other types of intracranial major artery stenosis/occlusion (ICAS); however, the role of RNF213 in the development of ICAS including MMD is unclear. The constitutive expression of the RNF213 gene is relatively weak in brain tissue, while information regarding the expression patterns of the RNF213 gene under cerebral ischemia, which is one of characteristic pathologies associated with ICAS, is currently limited...
July 19, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28729297/association-between-intracranial-atherosclerotic-calcium-burden-and-angiographic-luminal-stenosis-measurements
#5
H Baradaran, P Patel, G Gialdini, A Giambrone, M P Lerario, B B Navi, J K Min, C Iadecola, H Kamel, A Gupta
BACKGROUND AND PURPOSE: Calcification of the intracranial vasculature is an independent risk factor for stroke. The relationship between luminal stenosis and calcium burden in the intracranial circulation is incompletely understood. We evaluated the relationship between atherosclerotic calcification and luminal stenosis in the intracranial ICAs. MATERIALS AND METHODS: Using a prospective stroke registry, we identified patients who had both NCCT and CTA or MRA examinations as part of a diagnostic evaluation for ischemic stroke...
July 20, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28723788/protective-effect-of-the-microcatheter-placed-at-the-normal-vertebral-artery-in-intracranial-stent-assisted-angioplasty-for-vertebral-artery-stenosis-a-case-report
#6
Ming-Yi Wang, Yong-Sheng Liu, Ke Li, Yong-Jian Liu, Feng Wang
RATIONALE: A carefully designed intracranial stent-assisted angioplasty (SAA) is presented here that may prevent subsequent branch artery occlusion. PATIENT CONCERNS: A 72-year-old man with a 3-month history of progressive and intermittent vertigo without any obvious trigger, accompanied by nausea. DIAGNOSES: Intracranial atherosclerotic disease. INTERVENTIONS: the patient underwent intracranial SAA in accordance with the procedure described here...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28721209/recent-advances-in-preventing-stroke-recurrence
#7
REVIEW
J David Spence
Recent advances in secondary stroke prevention include new evidence in hypertension, nutrition, anticoagulation, antiplatelet therapy, intracranial stenosis, percutaneous closure of patent foramen ovale, and lipid-lowering therapy. Individualized therapy for hypertension based on phenotyping with plasma renin and aldosterone markedly improves blood pressure control in patients with resistant hypertension. A Mediterranean diet can reduce the risk of stroke by nearly half. The diagnosis and treatment of metabolic vitamin B12 deficiency, and B vitamins to lower homocysteine, can reduce the risk of stroke by approximately 30%...
2017: F1000Research
https://www.readbyqxmd.com/read/28720076/prevalence-and-risk-factors-of-intracranial-and-extracranial-artery-stenosis-in-asymptomatic-rural-residents-of-13-villages-in-china
#8
Haiqiang Jin, Qing Peng, Ding Nan, Pu Lv, Ran Liu, Wei Sun, Yuming Teng, Yuanyuan Liu, Chenghe Fan, Haiying Xing, Ke Xu, Yining Huang
BACKGROUND: The present study aimed to investigate the prevalence and risk factors for extracranial carotid artery stenosis (ECAS) and intracranial carotid artery stenosis (ICAS) simultaneously in asymptomatic Chinese pure rural population. METHODS: We analyzed 2589 asymptomatic subjects aged over 30 yr. by ultrasonography and transcranial Doppler simultaneously in 13 isolated villages by door-to-door investigation. Both ECAS and ICAS were defined as more than 50% stenosis...
July 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28718234/paediatrics-brain-imaging-in-epilepsy-common-presenting-symptoms-and-spectrum-of-abnormalities-detected-on-mri
#9
Azmat Ali, Faiza Akram, Ghayyur Khan, Shaukat Hussain
BACKGROUND: Epilepsy, a common neurological disorder can present at any age and has a number of aetiologies with underlying brain disease being the most common aetiology. Brain imaging becomes important and mandatory in the work up for epilepsy in localization and lateralization of the seizure focus. METHODS: This cross-sectional study was conducted in the department of Radiology Ayub Medical Teaching Institution Abbottabad from 1st March 2015 to 31st March 2016...
April 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28710082/accuracy-and-precision-of-venous-pressure-measurements-of-endovascular-microcatheters-in-the-setting-of-dural-venous-sinus-stenosis
#10
Michael B Avery, Sheryl Sambrano, Javed Khader Eliyas, Muneer Eesa, Alim P Mitha
INTRODUCTION: Dural venous sinus stenosis (DVSS) may lead to increased intracranial pressure, sometimes requiring a stent if a high pressure gradient exists. Many neuroendovascular physicians use microcatheters to measure gradients, yet there are no studies comparing the accuracies and precisions of modern day microcatheters. We examined pressure recordings from five commonly used microcatheters in an experimental DVSS model. METHODS: Using a programmable pump, dynamic flow was established in a closed circuit mimicking the venous sinus waveform...
July 14, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28709046/ankle-brachial-index-mri-markers-and-cognition-the-epidemiology-of-dementia-in-singapore-study
#11
Muhammad Amin Shaik, Narayanaswamy Venketasubramanian, Ching-Yu Cheng, Tien Yin Wong, Henri Vrooman, Mohammad Kamran Ikram, Saima Hilal, Christopher Chen
BACKGROUND AND AIMS: Previous studies showed an independent association of low ankle-brachial index (ABI) with cognitive impairment. However, the association between low ABI and cognition in the presence of both cerebrovascular disease (CeVD) and neurodegeneration is lacking. We aimed at investigating a) the association of low ABI with markers of CeVD and cortical thickness, and b) whether the association of low ABI with cognition is influenced by these markers. METHODS: Data was drawn from the Epidemiology of Dementia In Singapore (EDIS) study where all participants (n = 832) underwent neuropsychological tests and 3T brain magnetic resonance imaging (MRI) to assess CeVD markers as well as cortical thicknesses...
July 5, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28708731/noncontrast-hybrid-arterial-spin-labeled-imaging-of-the-intracranial-arteries
#12
Ruth P Lim, Elena Trajcevska, Farah Al Rawi, Dinesh Gooneratne, Windell Ang, Yuliya Perchyonok, Gregory Fitt, Andrew Kemp, Shivraman Giri, Davide Piccini, Amy Brodtmann, Helen Dewey, Ioannis Koktzoglou
OBJECTIVE: The purpose of this study is to evaluate feasibility, image quality (IQ), and accuracy of noncontrast hybrid arterial spin labeling (NoHASL) magnetic resonance angiography (MRA) compared with time of flight (TOF) MRA and contrast-enhanced (CE) MRA in patients with known/suspected cerebrovascular ischemia. METHODS: Thirty inpatients were imaged at 1.5 T. Two neuroradiologists assessed 630 intracranial arterial segments for IQ (1, nondiagnostic; 3, satisfactory for diagnosis; and 5, excellent)...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28707077/association-of-abcb1-promoter-methylation-with-aspirin-exposure-platelet-function-and-clinical-outcomes-in-chinese-intracranial-artery-stenosis-patients
#13
Xingang Li, Kun Zhao, Ning Ma, Shusen Sun, Zhongrong Miao, Zhigang Zhao
PURPOSE: DNA methylation typically acts to repress gene transcription. ABCB1 is involved in the intestinal absorption of aspirin. We aimed to investigate the impact of methylation status of ABCB1 promoter on aspirin exposure, platelet function, and clinical outcomes in Chinese intracranial artery stenosis patients receiving antiplatelet treatment. METHODS: Symptomatic intracranial artery stenosis patients (without carrying CYP2C19 loss-of-function alleles) receiving antiplatelet therapy were enrolled in this study...
July 13, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28705843/headache-tia-and-subarachnoid-haemorrhage-dissecting-an-unusual-cause-for-stroke-like-symptoms
#14
Elliot T Dawson, Desmond A Brown, Alejandro A Rabinstein
We present a case of supraclinoid internal carotid artery dissection. Eleven months prior, the patient developed isolated periorbital pain and was diagnosed with giant-cell arteritis with iritis. The patient experienced recurrent spells concerning for transient ischaemic attacks and was transferred to our institution for endovascular intervention after head CT revealed an embolic infarct with a 'dense middle cerebral artery sign.' Digital subtraction angiography was negative for occlusion, instead demonstrating luminal stenosis and poststenotic dilatation...
July 13, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28705815/sigmoid-sinus-diverticulum-dehiscence-and-venous-sinus-stenosis-potential-causes-of-pulsatile-tinnitus-in-patients-with-idiopathic-intracranial-hypertension
#15
J A Lansley, W Tucker, M R Eriksen, P Riordan-Eva, S E J Connor
BACKGROUND AND PURPOSE: Pulsatile tinnitus is experienced by most patients with idiopathic intracranial hypertension. The pathophysiology remains uncertain; however, transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence have been proposed as potential etiologies. We aimed to determine whether the prevalence of transverse sinus stenosis and sigmoid sinus diverticulum/dehiscence was increased in patients with idiopathic intracranial hypertension and pulsatile tinnitus relative to those without pulsatile tinnitus and a control group...
July 13, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28702117/balloon-angioplasty-for-intracranial-atherosclerotic-disease-a-multicenter-study
#16
Lakshmi Sudha Prasanna Karanam, Mukesh Sharma, Anand Alurkar, Sridhar Reddy Baddam, Vijaya Pamidimukkala, Raghavasarma Polavarapu
AIM: To evaluate the role and efficacy of the balloon angioplasty in intracranial atherosclerotic disease (ICAD) in patients who presented with acute stroke due to vessel occlusion and in patients with symptomatic disease despite optimum medical management. METHODS: From 2013 to 2016, a total of 39 patients (24 males and 15 females with a mean age of 64.5 years) underwent balloon angioplasty over a period of 2 years and 8 months in three different institutions in India...
June 2017: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/28680502/pathophysiology-and-diagnosis-of-vertebrobasilar-insufficiency-a-review-of-the-literature
#17
REVIEW
Arlindo Cardoso Lima Neto, Roseli Bittar, Gabriel Scarabotolo Gattas, Edson Bor-Seng-Shu, Marcelo de Lima Oliveira, Rafael da Costa Monsanto, Luis Felipe Bittar
Introduction  Vertebrobasilar insufficiency is defined as transitory ischemia of the vertebrobasilar circulation. Dizziness, vertigo, headaches, vomit, diplopia, blindness, ataxia, imbalance, and weakness in both sides of the body are the most common symptoms. Objective  To review the literature regarding the three available diagnostic testing in patients with dizziness complaints secondary to vertebrobasilar insufficiency (VBI): magnetic resonance angiography; transcranial Doppler ultrasound; and vertebrobasilar deprivation testing...
July 2017: International Archives of Otorhinolaryngology
https://www.readbyqxmd.com/read/28679857/challenges-in-the-medical-management-of-symptomatic-intracranial-stenosis-in-an-urban-setting
#18
Rajbeer S Sangha, Andrew M Naidech, Carlos Corado, Sameer A Ansari, Shyam Prabhakaran
BACKGROUND AND PURPOSE: Since the SAMMPRIS trial (Stenting and Aggressive Medical Management for Preventing Recurrent Stroke in Intracranial Stenosis), aggressive medical management (AMM), which includes dual antiplatelet therapy (DAPT) and high-dose statin (HDS) therapy, is recommended for patients with symptomatic intracranial atherosclerotic disease. However, limited data on the real-world application of this regimen exist. We hypothesized that recurrent stroke risk among patients treated with AMM is similar to the medical arm of the SAMMPRIS cohort...
July 5, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28677035/symptomatic-carotid-artery-stenosis-surgery-stenting-or-medical-therapy
#19
REVIEW
Ashley M Wabnitz, Tanya N Turan
Symptomatic carotid artery disease is a significant cause of ischemic stroke, and these patients are at high risk for recurrent vascular events. Patients with symptoms of stroke or transient ischemic attack attributable to a significantly stenotic vessel (70-99% luminal narrowing) should be treated with intensive medical therapy. Intensive medical therapy is a combination of pharmacologic and lifestyle interventions consistent with best-known practices as follows: initiation of antiplatelet agent or anticoagulation if medically indicated, high potency statin medication, blood pressure control with goal blood pressure of greater than 140/90, Mediterranean-style diet, exercise, and smoking cessation...
August 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28676650/decreased-estimated-glomerular-filtration-rate-egfr-not-proteinuria-is-associated-with-asymptomatic-intracranial-arterial-stenosis-in-chinese-general-population
#20
Zhaoxia Li, Jinxin Li, Anxin Wang, Hua Pan, Shouling Wu, Xingquan Zhao
The relationship between chronic kidney disease (CKD), which is defined by declined estimated glomerular filtration rate (eGFR) and/or proteinuria, and asymptomatic intracranial arterial stenosis (ICAS) is largely unknown. We conducted a population-based, cross-sectional study by recruiting 5209 participants free of previous stroke, transient ischemic attack and coronary heart disease. eGFR was calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) formula and proteinuria was estimated with urine dipstick...
July 4, 2017: Scientific Reports
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