keyword
MENU ▼
Read by QxMD icon Read
search

Intracranial stenosis

keyword
https://www.readbyqxmd.com/read/29790969/microcatheter-first-pass-effect-predicts-acute-intracranial-artery-atherosclerotic-disease-related-occlusion
#1
Ting-Yu Yi, Wen-Huo Chen, Yan-Min Wu, Mei-Fang Zhang, A-Lai Zhan, Yue-Hong Chen, Zong-Zhong Wu, Yan-Chuan Shi, Bai-Ling Chen
BACKGROUND: The differentiation between intracranial atherosclerotic stenosis (ICAS) and intracranial embolism as the immediate cause of acute ischemic stroke requiring endovascular therapy is important but challenging. In cases of ICAS, we often observe a phenomenon we call the microcatheter "first-pass effect," which is temporary blood flow through the occluded intracranial artery when the angiographic microcatheter is initially advanced through the site of total occlusion and immediately retrieved proximally...
May 22, 2018: Neurosurgery
https://www.readbyqxmd.com/read/29785667/cerebral-autoregulation-in-stroke
#2
REVIEW
Pedro Castro, Elsa Azevedo, Farzaneh Sorond
PURPOSE OF REVIEW: Cerebral autoregulation (CA) is a mechanism that maintains cerebral blood flow constant despite fluctuations in systemic arterial blood pressure. This review will focus on recent studies that measured CA non-invasively in acute cerebrovascular events, a feature unique to the transcranial Doppler ultrasound. We will summarize the rationale for CA assessment in acute cerebrovascular disorders and specifically evaluate the existing data on the value of CA measures in relation to clinical severity, guiding management decisions, and prognostication...
May 21, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29780226/cerebral-border-zone-infarction-an-etiological-study
#3
Tarek Mohammed El-Gammal, Wafik Said Bahnasy, Osama Abd Allah Ragab, Ayman Mohammed Al-Malt
Background: Border zone infarcts (BZI) are ischemic lesions at the junction between two main arterial territories which may be either cortical or internal BZI. Methods: This study was conducted on 76 cerebral BZI patients and 20 healthy control subjects. Patients were divided to group I included 26 internal BZI, group II included 19 cortical BZI and group III included 21 mixed internal/cortical BZI patients. Included subjects were submitted to neurological examination, laboratory investigations, ECG, echocardiogram, brain CT and/or MRI and extra and intracranial blood vessels imaging by duplex and CT angiography...
2018: The Egyptian journal of neurology, psychiatry and neurosurgery
https://www.readbyqxmd.com/read/29761219/intracranial-rescue-stent-angioplasty-after-stent-retriever-thrombectomy-multicenter-experience
#4
Robert Forbrig, Hannah Lockau, Fabian Flottmann, Tobias Boeckh-Behrens, Christoph Kabbasch, Maximilian Patzig, Anastasios Mpotsaris, Jens Fiehler, Thomas Liebig, Goetz Thomalla, Oezguer A Onur, Silke Wunderlich, Kornelia Kreiser, Moriz Herzberg, Frank A Wollenweber, Sascha Prothmann, Franziska Dorn
PURPOSE: Stent-retriever thrombectomy (SRT) for acute intracranial large artery occlusion (LAO) may not result in permanent recanalization in rare cases, e.g. due to an underlying stenosis or dissection. In this specific patient group, rescue stent angioplasty (RSA) may be the only treatment option to achieve permanent vessel patency and potentially a good clinical outcome. To date, the experience with RSA is limited. METHODS: In this retrospective analysis, interventional and clinical data of patients with acute intracranial LAO of the anterior and posterior circulation who underwent RSA after SRT due to an underlying lesion between 2012-2017 in four neurovascular centers were studied...
May 14, 2018: Clinical Neuroradiology
https://www.readbyqxmd.com/read/29760293/-safety-of-dual-antiplatelet-therapy-with-argatroban-in-patients-with-acute-ischemic-stroke
#5
Yoshinari Nagakane, Eijirou Tanaka, Shinji Ashida, Yuta Kojima, Shiori Ogura, Keiko Maezono, Yasumasa Yamamoto
To prevent early neurological worsening or recurrence in stroke patients with intracranial arterial stenosis or branch atheromatous disease, aggressive antithrombotic therapy, such as dual antiplatelet therapy (DAPT) with or without anticoagulant therapy, is warranted. Such an aggressive antithrombotic therapy, however, may increase the bleeding risk. We studied the risks of DAPT with the anticoagulant argatroban in patients with acute ischemic stroke or transient ischemic attack (TIA). Between October 2011 and September 2015, 341 patients with stroke or TIA, who received DAPT with argatroban within 48 hours after onset, were retrospectively studied...
May 2018: Brain and Nerve, Shinkei Kenkyū No Shinpo
https://www.readbyqxmd.com/read/29754068/contrast-enhanced-magnetic-resonance-venography-in-the-follow-up-evaluation-of-idiopathic-intracranial-hypertension-patients-with-cerebral-venous-sinus-stenting
#6
Srikanth R Boddu, Pierre Gobin, Cristiano Oliveira, Marc Dinkin, Athos Patsalides
PURPOSE: Role of contrast-enhanced magnetic resonance venography (CE-MRV) in the follow-up of venous sinus stenting (VSS) among the idiopathic intracranial hypertension (IIH) patients. MATERIALS AND METHODS: Prospective evaluation of VSS patients with CE-MRV, DRCV and DSA for follow-up of clinically suspected recurrent stenosis. CE-MRV was evaluated against DRCV and DSA. RESULTS: Ten patients with twelve episodes of recurrent symptoms. Sensitivity, specificity, PPV, NPV and accuracy of the CE-MRV for the detection of recurrent stenosis were: 100%, 33...
May 1, 2018: Clinical Imaging
https://www.readbyqxmd.com/read/29752070/rnf213-p-r4810k-polymorphism-and-the-risk-of-moyamoya-disease-intracranial-major-artery-stenosis-occlusion-and-quasi-moyamoya-disease-a-meta-analysis
#7
Yue Wang, Michael Mambiya, Qian Li, Luping Yang, He Jia, Yibo Han, Wanyang Liu
BACKGROUND: Accumulating studies have reported that there is an association between the Ring finger protein 213 (RNF213) p.R4810K (rs112735431, c.14576G>A) single nucleotide polymorphism and the predisposition of moyamoya disease (MMD), intracranial major artery stenosis/occlusion (ICASO), quasi-moyamoya disease (quasi-MMD), and other vascular diseases. However, to this day, analyses about this association have remained scarce in the literature. We attempted to conduct a meta-analysis to systematically summarize and clarify the issue...
May 8, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/29747323/-efficacy-of-bare-metal-stent-for-treating-focal-coronary-artery-aneurysm-complicating-with-severe-stenosis-in-single-coronary-artery
#8
S B Qiao, J Li, J G Cui, J S Yuan, S W Liu, J Zhao, F H Hu, W X Yang, H B Liu, Z W Sun, R L Gao
Objective: To investigate the efficacy of bare metal stent for treating focal coronary artery aneurysm complicating with severe stenosisin single coronary artery. Methods: This retrospective analysis was performed in 7 patients who were diagnosed as local coronary artery aneurysm complicating with severe stenosis(≥70%) in single coronary artery and treated with bare metal stent during the period from December 2012 to June 2015 in Fuwai Hospital. All 7 patients were male with age of (62±11) years old. During the interventional operation, the narrow parts were pre-expanded,and all patients received bare metal stents implantation to cover aneurysms...
April 24, 2018: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/29736424/value-of-double-track-sign-in-differentiating-primary-from-thrombosed-transverse-sinus-stenosis-in-patients-presumed-to-have-idiopathic-intracranial-hypertension
#9
Nasser M Aldossary
Background: Idiopathic intracranial hypertension (IIH) is primarily a disorder of young obese women of unknown etiology. The clinical presentation of IIH is similar to that of sinus thrombosis. The incidence of transverse sinus stenosis (TSS) reaches up to 90% of patients with IIH compared with normal subjects, and venous sinus thrombosis was reported in 11.4% of patients previously diagnosed as having IIH. Patients with thrombosis showed an abnormal region of double- track pattern on gadolinium (Gd) - enhanced T1WI within the dural sinus...
March 2018: ENeurologicalSci
https://www.readbyqxmd.com/read/29725389/imaging-characteristics-and-pathogenesis-of-intracranial-artery-stenosis-in-patients-with-acute-cerebral-infarction
#10
Wenyuan Xu, Ning Xie, Cheng Zhang, Qin Huang
The current study aimed to investigate the imaging characteristics and pathogenesis of intracranial artery stenosis in patients with acute cerebral infarction. In total, 84 patients diagnosed with acute cerebral infarction were recruited. Magnetic resonance angiography was performed to detect the existence of intracranial artery stenosis or occlusion. In addition, magnetic resonance imaging and diffusion weighted imaging were employed to analyze the infarction types and characteristics. In the majority of patients, the infarction resulted from internal carotid stenosis (77 cases; 91...
May 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29715587/ex-vivo-vessel-wall-thickness-measurements-of-the-human-circle-of-willis-using-7t-mri
#11
Anita A Harteveld, Nerissa P Denswil, Wim Van Hecke, Hugo J Kuijf, Aryan Vink, Wim G M Spliet, Mat J Daemen, Peter R Luijten, Jaco J M Zwanenburg, Jeroen Hendrikse, Anja G van der Kolk
BACKGROUND AND AIMS: MRI can detect intracranial vessel wall thickening before any luminal stenosis is present. Apart from representing a vessel wall lesion, wall thickening could also reflect normal (age-related) variations in vessel wall thickness present throughout the intracranial arterial vasculature. The aim of this study was to perform vessel wall thickness measurements of the major intracranial arteries in ex vivo circle of Willis (CoW) specimens using 7T MRI, to obtain more detailed information about wall thickness variations of the intracranial arteries...
April 24, 2018: Atherosclerosis
https://www.readbyqxmd.com/read/29701913/the-influence-of-abcb1-and-p2y12-genetic-variants-on-clinical-outcomes-in-chinese-intracranial-artery-stenosis-patients
#12
Xingang Li, Liqun Jiang, Shusen Sun, Wei Li, Xiaoqing Li, Zhongrong Miao, Zhigang Zhao, Ning Ma
For intracranial artery stenosis patients, high inter-individual variability in response to antiplatelet drug therapy results in recurrent ischemic events. We aimed to evaluate the association of drug-related genetic polymorphisms with adverse clinical outcomes. We consecutively enrolled 157 patients receiving dual-antiplatelet therapy (aspirin plus clopidogrel), and adverse clinical events occurred in 10 patients during the one year follow-up. The P2Y12 polymorphisms (rs9859538 and rs10935842) were associated with increased likelihood of relapse events (OR=2...
April 27, 2018: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/29701549/letter-to-the-editor-the-causative-role-of-sinus-stenosis-in-idiopathic-intracranial-hypertension
#13
Roberto De Simone, Angelo Ranieri
No abstract text is available yet for this article.
April 27, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29700047/multicentric-experience-in-distal-to-proximal-revascularization-of-tandem-occlusion-stroke-related-to-internal-carotid-artery-dissection
#14
G Marnat, M Bühlmann, O F Eker, J Gralla, P Machi, U Fischer, C Riquelme, M Arnold, A Bonafé, S Jung, V Costalat, P Mordasini
BACKGROUND AND PURPOSE: Internal carotid dissection is a frequent cause of ischemic stroke in young adults. It may cause tandem occlusions in which cervical carotid obstruction is associated with intracranial proximal vessel occlusion. To date, no consensus has emerged concerning endovascular treatment strategy. Our aim was to evaluate our endovascular "distal-to-proximal" strategy in the treatment of this stroke subtype in the first large multicentric cohort. MATERIALS AND METHODS: Prospectively managed stroke data bases from 2 separate centers were retrospectively studied between 2009 and 2014 for records of tandem occlusions related to internal carotid dissection...
April 26, 2018: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/29698879/use-of-pipeline%C3%A2-embolization-device-for-the-treatment-of-traumatic-intracranial-pseudoaneurysms-case-series-and-review-of-cases-from-literature
#15
Mairaj T Sami, Domenico A Gattozzi, Hesham M Soliman, Alan R Reeves, Christopher J Moran, Paul J Camarata, Koji C Ebersole
OBJECTIVE: Intracranial traumatic pseudoaneurysms (PSA) are a rare but dangerous subtype of cerebral aneurysm. Reports documenting use of flow-diverting stents to treat traumatic intracranial PSAs are few and lack long-term follow-up. To our knowledge, this is the largest case-series to date demonstrating use of Pipeline Endovascular Device (PED) for traumatic intracranial PSAs. PATIENTS AND METHODS: Retrospective review of 8 intracranial traumatic PSAs in 7 patients treated using only PED placement...
June 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29689402/intradural-lumbar-migration-of-an-intracranial-neurosurgical-hemostatic-clip-associated-with-lumbosciatic-pain
#16
Mourad Ould-Slimane, Martin Petit, Gaëtan Tesson, Jordane Mouton, Rémi Gauthé
BACKGROUND: Clips implanted during intracranial neurosurgical procedures sometimes migrate intradurally with rare cases of spinal migration. The appearance of radicular symptoms of topography concordant with the position of the foreign body leads to discussion about the optimal therapeutic strategy. CASE DESCRIPTION: We report the case of a 52-year-old woman suffering from L5 radicular pain resistant to medical treatment in the presence of L4L5 lumbar stenosis and a neurosurgical clip migrated to the L5S1 level...
April 21, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29686166/-percutaneous-transluminal-sinus-stenting-for-sigmoid-sinus-stenosis-associated-with-transverse-sigmoid-sinus-dural-arteriovenous-fistula-a-case-report
#17
Yoshiaki Tetsuo, Hiroyuki Matsumoto, Hirokazu Nishiyama, Hideki Takemoto, Naoyuki Nakao
We report a case of transverse sinus-sigmoid sinus dural arteriovenous fistula(T-S dAVF)with venous flow congestion, which was accompanied by sigmoid sinus stenosis and treated with percutaneous transluminal sinus stenting. A 76-year-old woman presented with dementia and disturbance of consciousness. Magnetic resonance imaging(MRI)on admission revealed subcortical edema in the left occipital lobe and angiography demonstrated a left T-S dAVF with right transverse sinus occlusion and sigmoid sinus stenosis. Hemodynamics of the shunt flow from several feeders demonstrated retrograde flow to the straight sinus and superior sagittal sinus, and antegrade flow into the left internal jugular vein...
April 2018: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29685407/staged-carotid-artery-stenting-in-patients-with-severe-carotid-stenosis-multicenter-experience
#18
Dong Hyun Yoo, Hong Gee Roh, See-Sung Choi, Jusun Moon, Jeongjun Lee, Young Dae Cho, Moon Hee Han, Keun-Hwa Jung, Byung-Woo Yoon, Hyun-Seung Kang
Cerebral hyperperfusion syndrome (CHS) is serious complication after carotid artery stenting (CAS) caused by decreased cerebral vasoreactivity (CVR) due to long standing hypoperfusion of the brain. We hypothesized that partial dilatation of carotid stenosis would allow the recovery of CVR, and prevent CHS when definitive angioplasty with stent is performed afterward. In this study, we aimed to evaluate the safety and efficacy of staged CAS in patients with severe carotid artery stenosis with evident hemodynamic compromise in regard to preventing hyperperfusion syndrome...
April 20, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29684514/an-analysis-of-radiation-effects-in-digital-subtraction-angiography-of-intracranial-artery-stenosis
#19
Chaoqun Guo, Xiaolei Shi, Xianhui Ding, Zhiming Zhou
BACKGROUND: Intracranial artery stenosis (IAS) is the most common cause for acute cerebral accidents. Digital subtraction angiography (DSA) is the gold standard to detect IAS, and usually brings excess radiation exposure to examinees and examiners. The artery pathology might influence the interventional procedure, causing a prolonged radiation effects. However, no studies are available on the association between IAS pathology and operational parameters. METHODS: A retrospective analysis was conducted on 93 patients with first-ever stroke/transient ischemic attack (TIA), who received DSA examination within 3 months from onset in this single center...
April 20, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29681886/importance-of-collateralization-in-patients-with-large-artery-intracranial-occlusive-disease-long-term-longitudinal-assessment-of-cerebral-hemodynamic-function
#20
Larissa McKetton, Lakshmikumar Venkatraghavan, Julien Poublanc, Olivia Sobczyk, Adrian P Crawley, Casey Rosen, Frank L Silver, James Duffin, Joseph A Fisher, David J Mikulis
Patients with large artery intracranial occlusive disease (LAICOD) are at risk for both acute ischemia and chronic hypoperfusion. Collateral circulation plays an important role in prognosis, and imaging plays an essential role in diagnosis, treatment planning, and prognosis of patients with LAICOD. In addition to standard structural imaging, assessment of cerebral hemodynamic function is important to determine the adequacy of collateral supply. Among the currently available methods of assessment of cerebral hemodynamic function, measurement of cerebrovascular reactivity (CVR) using blood oxygen level-dependent (BOLD) MRI and precisely controlled CO2 has shown to be a safe, reliable, reproducible, and clinically useful method for long-term assessment of patients...
2018: Frontiers in Neurology
keyword
keyword
46647
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"