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https://www.readbyqxmd.com/read/28209740/quantitative-mri-volumetry-diffusivity-cerebrovascular-flow-and-cranial-hydrodynamics-during-head-down-tilt-and-hypercapnia-the-spacecot-study
#1
Larry Allen Kramer, Khader M Hasan, Ashot E Sargsyan, Karina Marshall-Goebel, Jörn Rittweger, Dorit Donoviel, Saki Higashi, Benson Mwangi, Darius A Gerlach, Eric M Bershad
PURPOSE: In order to improve the pathophysiologic understanding of visual changes observed in astronauts, we aimed to use quantitative MRI to measure anatomic and physiologic responses during a ground-based spaceflight analogue (head down tilt, HDT) combined with increased ambient carbon dioxide (CO2). METHODS: Six healthy, male subjects participated in the double-blinded, randomized cross-over design study with two conditions: 26.5 h of -12° HDT with ambient air and with 0...
February 16, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28208842/assessment-of-serum-vaspin-levels-among-type-2-diabetes-mellitus-patients-with-or-without-acute-coronary-syndrome
#2
Aswathy Jaya Sathyaseelan, Prashant Shankarrao Adole, Mukta Wyawahare, Rama Prakasha Saya
INTRODUCTION: Type 2 Diabetes Mellitus (DM) is on the verge of becoming a pandemic in India. Type 2 DM patient have two to four times increased risk of carotid artery disease. Adipokines have been regarded recently as direct link between diabetes and atherosclerosis. Visceral Adipose Tissue Derived Serine Protease Inhibitor (VASPIN); one of the most recently discovered adipokine, inhibits the proteases responsible for insulin resistance, carotid plaque development and rupture. In literature, few studies have addressed the role of VASPIN in pathogenesis of Acute Coronary Syndrome (ACS) in patients with type 2 DM...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28195506/the-use-of-diffusion-weighted-imaging-to-evaluate-pathology-outside-the-brain-parenchyma-in-neuroimaging-studies
#3
Philip Benjamin, Faraan Khan, Andrew D MacKinnon
Diffusion weighted imaging (DWI) has transformed the radiological assessment of a variety of cerebral pathologies, in particular acute stroke. In neuroimaging studies, DWI can also be used to evaluate pathology outside the brain parenchyma, although it is sometimes underutilised for this purpose. In this pictorial review, the principles of diffusion-weighted imaging are outlined and thirteen cases of abnormal diffusion outside the brain parenchyma are illustrated in order to show DWI as a useful sequence for the evaluation of the following recommended review areas: the dural venous sinuses, internal carotid arteries, meninges, ventricles, cavernous sinus and orbits, skull base, and lymph nodes...
February 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28188949/one-stage-angioplasty-and-stenting-of-ostium-of-left-common-carotid-artery-and-stenting-of-left-internal-carotid-artery
#4
Massoud Ghasemi, Maryam Mehrpooya, Farshad Ghasemi, Fatemeh Shahbazi
Our aim was to report techniques and our experience in One-stage angioplasty and stenting of ostium of left common carotid and left internal carotid arteries in an octogenarian man with transient ischemic attack, who was completely recovered from neurologic insults short time after the procedure. An 81-year-old man presented with a transient ischemic attack. Neurologic examination showed left side transient visual obscuration or amaurosis fugax and right hemiparesis. Carotid duplex imaging revealed an 80% stenosis of the left internal carotid artery (LICA) and 95 % of the ostium of left common carotid artery (left CCA)...
January 2017: Acta Medica Iranica
https://www.readbyqxmd.com/read/28187920/holter-electrocardiogram-monitoring-in-patients-with-acute-ischaemic-stroke-find-afrandomised-an-open-label-randomised-controlled-trial
#5
Rolf Wachter, Klaus Gröschel, Götz Gelbrich, Gerhard F Hamann, Pawel Kermer, Jan Liman, Joachim Seegers, Katrin Wasser, Anna Schulte, Falko Jürries, Anna Messerschmid, Nico Behnke, Sonja Gröschel, Timo Uphaus, Anne Grings, Tugba Ibis, Sven Klimpe, Michaela Wagner-Heck, Magdalena Arnold, Evgeny Protsenko, Peter U Heuschmann, David Conen, Mark Weber-Krüger
BACKGROUND: Atrial fibrillation is a major risk factor for recurrent ischaemic stroke, but often remains undiagnosed in patients who have had an acute ischaemic stroke. Enhanced and prolonged Holter-electrocardiogram-monitoring might increase detection of atrial fibrillation. We therefore investigated whether enhanced and prolonged rhythm monitoring was better for detection of atrial fibrillation than standard care procedures in patients with acute ischaemic stroke. METHODS: Find-AFRANDOMISED is an open-label randomised study done at four centres in Germany...
February 7, 2017: Lancet Neurology
https://www.readbyqxmd.com/read/28178140/utility-of-duranta-a-wireless-patch-type-electrocardiographic-monitoring-system-developed-in-japan-in-detecting-covert-atrial-fibrillation-in-patients-with-cryptogenic-stroke-a-case-report
#6
Hisanao Akiyama, Saki Nukui, Takashi Araga, Masashi Hoshino, Keita Tanaka, Satoru Kashima, Rie Sasaki, Kenji Uchino, Yasuhiro Hasegawa
RATIONALE: Subcutaneous implantable electrocardiographs are highly effective in detecting covert atrial fibrillation (AF) in cryptogenic stroke. However, these invasive devices are not indicated for all cryptogenic stroke patients, and noninvasive improvements over conventional Holter-type ambulatory electrocardiography are needed. We evaluated the clinical application and effectiveness of Duranta (ImageONE Co., Ltd.), a wireless patch-type electrocardiographic monitoring system developed in Japan for chronically ill patients or home-based patients at the end of life...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28174194/safety-and-efficacy-of-remote-ischemic-preconditioning-in-patients-with-severe-carotid-artery-stenosis-prior-to-carotid-artery-stenting-a-proof-of-concept-randomized-controlled-trial
#7
Wenbo Zhao, Ran Meng, Chun Ma, Baojun Hou, Liqun Jiao, Fengshui Zhu, Weijuan Wu, Jingfei Shi, Yunxia Duan, Renling Zhang, Jing Zhang, Yongxin Sun, Hongqi Zhang, Feng Ling, Yuping Wang, Wuwei Feng, Yuchuan Ding, Bruce Ovbiagele, Xunming Ji
BACKGROUND: -Remote ischemic preconditioning (RIPC) can inhibit recurrent ischemic events effectively in patients with acute or chronic cerebral ischemia. However, it is still unclear that whether RIPC can impede ischemic injury after carotid artery stenting (CAS) in patients with severe carotid artery stenosis. METHODS: -Subjects with severe carotid artery stenosis were recruited in this randomized controlled study, and assigned to RIPC, sham and no intervention (control) groups...
February 7, 2017: Circulation
https://www.readbyqxmd.com/read/28162027/retriever-wire-supported-carotid-artery-revascularization-rewised-care-in-acute-ischemic-stroke-with-underlying-tandem-occlusion-caused-by-an-internal-carotid-artery-dissection-technical-note
#8
Daniel Behme, Michael Knauth, Marios-Nikos Psychogios
We hereby report a novel technical approach for the treatment of acute stroke with underlying tandem occlusion. The so-called retriever wire supported carotid artery revascularization (ReWiSed CARe) technique, utilizing the wire of a stent-retriever as a guiding wire for carotid artery stenting, is technically feasible in tandem occlusions caused by an internal carotid artery (ICA) dissection or high grade ICA stenosis. This technique eliminates the need to use a long microwire in order to maintain the position inside the true lumen of a dissection...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28160583/calcified-carotid-artery-atheromas-on-panoramic-radiographs-of-head-and-neck-cancer-patients-before-and-after-radiotherapy
#9
R-L Markman, K-G Conceição-Vasconcelos, T-B Brandão, A-C Prado-Ribeiro, A-R Santos-Silva, M Ajudarte Lopes
BACKGROUND: The aims of this study were to verify if head and neck radiotherapy (RT) is able to induce calcified carotid artery atheroma (CCAA) in a large head and neck cancer (HNC) population and also to compare the socio-demographic and clinical findings of patients with and without CCAA detected on panoramic radiographs. MATERIAL AND METHODS: Panoramic radiographs taken before and after head and neck radiotherapy (RT) of 180 HNC patients were selected and analyzed in order to identify the presence of CCAA...
February 4, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28155716/a-multi-component-parallel-plate-flow-chamber-system-for-studying-the-effect-of-exercise-induced-wall-shear-stress-on-endothelial-cells
#10
Yan-Xia Wang, Cheng Xiang, Bo Liu, Yong Zhu, Yong Luan, Shu-Tian Liu, Kai-Rong Qin
BACKGROUND: In vivo studies have demonstrated that reasonable exercise training can improve endothelial function. To confirm the key role of wall shear stress induced by exercise on endothelial cells, and to understand how wall shear stress affects the structure and the function of endothelial cells, it is crucial to design and fabricate an in vitro multi-component parallel-plate flow chamber system which can closely replicate exercise-induced wall shear stress waveforms in artery. METHODS: The in vivo wall shear stress waveforms from the common carotid artery of a healthy volunteer in resting and immediately after 30 min acute aerobic cycling exercise were first calculated by measuring the inner diameter and the center-line blood flow velocity with a color Doppler ultrasound...
December 28, 2016: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28154161/development-of-coronary-pulse-wave-velocity-new-pathophysiological-insight-into-coronary-artery-disease
#11
Brahim Harbaoui, Pierre-Yves Courand, Andrei Cividjian, Pierre Lantelme
BACKGROUND: Although aortic stiffness assessed by pulse wave velocity (PWV) is a strong predictor of coronary artery disease, the significance of local coronary stiffness has never been tackled. The first objective of this study was to describe a method of measuring coronary PWV (CoPWV) invasively and to describe its determinants. The second objective was to assess both CoPWV and aortic PWV in patients presenting with acute coronary syndromes or stable coronary artery disease. METHODS AND RESULTS: In 53 patients, CoPWV was measured from the delay in pressure wave and distance traveled as a pressure wire was withdrawn from the distal to the proximal coronary segment...
February 2, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28151862/a-lower-baseline-glomerular-filtration-rate-predicts-high-mortality-and-newly-cerebrovascular-accidents-in-acute-ischemic-stroke-patients
#12
Kai Dong, Xiaoqin Huang, Qian Zhang, Zhipeng Yu, Jianping Ding, Haiqing Song
Chronic kidney disease (CKD) is gradually recognized as an independent risk factor for cardiovascular and cardio-/cerebrovascular disease. This study aimed to examine the association of the estimated glomerular filtration rate (eGFR) and clinical outcomes at 3 months after the onset of ischemic stroke in a hospitalized Chinese population.Totally, 972 patients with acute ischemic stroke were enrolled into this study. Modified of Diet in Renal Disease (MDRD) equations were used to calculate eGFR and define CKD...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28151850/distinctive-patterns-on-ct-angiography-characterize-acute-internal-carotid-artery-occlusion-subtypes
#13
Ji Man Hong, Sung Eun Lee, Seong-Joon Lee, Jin Soo Lee, Andrew M Demchuk
Noninvasive computed tomography angiography (CTA) is widely used in acute ischemic stroke, even for diagnosing various internal carotid artery (ICA) occlusion sites, which often need cerebral digital subtraction angiography (DSA) confirmation. We evaluated whether clinical outcomes vary depending on the DSA-based occlusion sites and explored correlating features on baseline CTA that predict DSA-based occlusion site.We analyzed consecutive patients with acute ICA occlusion who underwent DSA and CTA. Occlusion site was classified into cervical, cavernous, petrous, and carotid terminus segments by DSA confirmation...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28149590/one-stage-hybrid-surgery-for-acute-stanford-type-a-aortic-dissection-with-david-operation-aortic-arch-debranching-and-endovascular-graft-a-case-report
#14
Lulu Liu, Chaoyi Qin, Jianglong Hou, Da Zhu, Bengui Zhang, Hao Ma, Yingqiang Guo
Acute Stanford type A aortic dissection requires an extremely complex surgical strategy and presents high risk of complications. Although many different procedures were reported to treat this aortic dissection, high mortality rate and incidences of complications still exist. This study presents a 59-year-old lady with acute Stanford type A aortic dissection, which originated from the aortic root to proximal part of right external iliac artery and involved the brachiocephalic trunk, left carotid artery, celiac trunk, and left renal artery...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28136710/atherosclerotic-plaque-burden-of-middle-cerebral-artery-and-extracranial-carotid-artery-characterized-by-mri-in-patients-with-acute-ischemic-stroke-in-china-association-and-clinical-relevance
#15
Ye Cao, Yi Sun, Bin Zhou, Huilin Zhao, Ying Zhu, Jianrong Xu, Xiaosheng Liu
OBJECTIVES: This study sought to compare the atherosclerotic plaque burden between middle cerebral artery (MCA) and extracranial carotid artery (ECA) in ischemic stroke patients using high-resolution, black-blood (HR BB) MRI and to investigate the relationship between plaque burden found in both arteries and stroke severity. METHODS: All subjects with recent ischemic stroke underwent MCA and ECA HR BB MRI at 3.0 Tesla. For each artery segment, the thickness, area and signal intensities of plaques were recorded...
January 30, 2017: Neurological Research
https://www.readbyqxmd.com/read/28127524/severe-carotid-artery-stenosis-evaluated-by-ultrasound-is-associated-with-post-stroke-vascular-cognitive-impairment
#16
Xuefeng Li, Xiangling Ma, Jing Lin, Xiangqin He, Feng Tian, Dongmei Kong
BACKGROUND: Acute ischemic stroke has been recognized as one key cause of vascular cognitive impairment (VCI). The purpose of this study was to evaluate the correlation between carotid artery stenosis and post VCI in acute ischemic stroke patients. METHODS: In this study, B-mode ultrasound was applied to measure the degree of carotid artery stenosis. After 1 year, the stroke patients' cognitive function was assessed by the mini-mental state examination (MMSE) score...
January 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28127130/endovascular-therapy-using-flow-diversion-for-giant-internal-carotid-artery-pseudoaneurysm-arising-in-the-setting-of-an-invasive-pituitary-macroadenoma
#17
Amin F Saad, Almas Syed, Keyan B Marashi, Brian D O'Rourke, Joseph H Hise, Michael J Opatowsky, Kennith F Layton
This report illustrates the unusual occurrence of a pseudoaneurysm arising in the setting of a skull base mass and describes the first reported use of endovascular flow diversion therapy in such a setting. A 63-year-old man with occasional headaches during the preceding month presented with the acute onset of severe left retroorbital headache and oculomotor nerve palsy. Computed tomography (CT) and CT angiogram revealed a destructive skull base mass with an associated giant probable pseudoaneurysm of the cavernous segment of the left internal carotid artery...
January 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28122425/multifocal-myoclonus-as-a-manifestation-of-acute-cerebral-infarction-recovered-by-carotid-arterial-stenting
#18
Hyangkyoung Kim, Jun Soo Byun, Mark Hallett, Hae-Won Shin
No abstract text is available yet for this article.
January 2017: Journal of Movement Disorders
https://www.readbyqxmd.com/read/28121665/body-mass-index-carotid-plaque-and-clinical-outcomes-in-patients-with-coronary-artery-disease
#19
Hyun Woong Park, Ki-Hong Kim, In Girl Song, Taek-Geun Kwon, Wan Ho Kim, Jang-Ho Bae
OBJECTIVES: We evaluated the relationship among BMI, carotid sonographic findings, and long-term (5 years) cardiovascular events in Asian patients with coronary artery disease (CAD). PATIENTS AND METHODS: The study population consisted of 1342 consecutive patients with CAD, who were stratified into four groups according to weight status, as defined by the WHO for the Asian population: underweight (group I: BMI<18.5 kg/m, n=38); normal weight (group II: 18.5≤BMI<23...
January 31, 2017: Coronary Artery Disease
https://www.readbyqxmd.com/read/28118794/concomitant-surgical-treatment-of-symptomatic-carotid-artery-disease-with-a-coexisting-shamblin-i-carotid-body-tumor
#20
Carlos A Hinojosa, Javier E Anaya-Ayala, Hugo Laparra-Escareno, Adriana Torres-Machorro, Rene Lizola, Armando Gamboa-Domínguez
Symptomatic carotid artery atherosclerotic disease is an indication for carotid artery endarterectomy. The coexistence of carotid body tumors (CBTs) with symptomatic carotid disease is rarely encountered and adds significant challenges to vascular surgeons, with a reported overall mortality for patients who undergo endarterectomy and tumor excision of 8.8%, as opposed to the 2% for those who had CBT excision only. We describe the case of a 79-year-old female who experienced an acute cerebrovascular accident in the left hemisphere; duplex ultrasound revealed high-grade carotid stenosis in the left side and the presence of a Shamblin I CBT...
January 1, 2017: Vascular and Endovascular Surgery
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