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Transient ischemic attack

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https://www.readbyqxmd.com/read/28448515/chronic-cocaine-induces-hif-vegf-pathway-activation-along-with-angiogenesis-in-the-brain
#1
Wei Yin, Kevin Clare, Qiujia Zhang, Nora D Volkow, Congwu Du
Cocaine induces vasoconstriction in cerebral vessels, which with repeated use can result in transient ischemic attacks and cerebral strokes. However, the neuroadaptations that follow cocaine's vasoconstricting effects are not well understood. Here, we investigated the effects of chronic cocaine exposure (2 and 4 weeks) on markers of vascular function and morphology in the rat brain. For this purpose we measured nitric oxide (NO) concentration in plasma, brain neuronal nitric oxide synthase (nNOS or NOS1), HIF-1α, and VEGF expression in different brain regions, i...
2017: PloS One
https://www.readbyqxmd.com/read/28447627/short-term-blood-pressure-variability-and-long-term-blood-pressure-variability-which-one-is-a-reliable-predictor-for-recurrent-stroke
#2
Y Tao, J Xu, B Song, X Xie, H Gu, Q Liu, L Zhao, Y Wang, Y Xu, Y Wang
The relationship between blood pressure variability (BPV) and stroke recurrence is controversial. This study aimed to evaluate the predictive value of short-term and long-term BPV for stroke recurrence. The data from blood pressure and clinical outcome in TIA or ischemic stroke (BOSS) study included participants with acute ischemic stroke or transient ischemic attack (TIA) within 7 days after onset. Short-term BPV was measured by 24-h ambulatory BP measurement during hospitalisation. Long-term BPV, based on home blood pressure measurement, was measured by patients or their families from discharge to 90 days after qualifying events onset (twice daily)...
April 27, 2017: Journal of Human Hypertension
https://www.readbyqxmd.com/read/28441928/canadian-stroke-best-practice-recommendations-telestroke-best-practice-guidelines-update-2017
#3
Dylan Blacquiere, M Patrice Lindsay, Norine Foley, Colleen Taralson, Susan Alcock, Catherine Balg, Sanjit Bhogal, Julie Cole, Marsha Eustace, Patricia Gallagher, Antoinette Ghanem, Alexander Hoechsmann, Gary Hunter, Khurshid Khan, Alier Marrero, Brian Moses, Kelley Rayner, Andrew Samis, Elisabeth Smitko, Marilyn Vibe, Gord Gubitz, Dariush Dowlatshahi, Stephen Phillips, Frank L Silver
Every year, approximately 62,000 people with stroke and transient ischemic attack are treated in Canadian hospitals. The 2016 update of the Canadian Stroke Best Practice Recommendations Telestroke guideline is a comprehensive summary of current evidence-based and consensus-based recommendations appropriate for use by all healthcare providers and system planners who organize and provide care to patients following stroke across a broad range of settings. These recommendations focus on the use of telemedicine technologies to rapidly identify and treat appropriate patients with acute thrombolytic therapies in hospitals without stroke specialized expertise; select patients who require to immediate transfer to stroke centers for Endovascular Therapy; and for the patients who remain in community hospitals to facilitate their care on a stroke unit and provide remote access to stroke prevention and rehabilitation services...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28440116/telemedical-strategies-for-the-improvement-of-secondary-prevention-in-patients-with-cerebrovascular-events-a-systematic-review-and-meta-analysis
#4
Peter Kraft, Steffi Hillmann, Viktoria Rücker, Peter U Heuschmann
Background Data from European countries consistently show that guideline-conform secondary prevention after stroke/transient ischemic attack is being realized in only 50-80% of patients. Use of telemedicine to support long-term secondary prevention has been effective in other cardiovascular diseases. Aims We reviewed current evidence for telemedical-supported strategies for the improvement of secondary prevention after stroke/transient ischemic attack. A systematic review was performed in accordance with the PRISMA statement searching MEDLINE, the Cochrane Central Register of Controlled Trials, and reference lists of articles published until 18 May 2016...
January 1, 2017: International Journal of Stroke: Official Journal of the International Stroke Society
https://www.readbyqxmd.com/read/28439851/exploring-the-pathophysiology-of-takotsubo-cardiomyopathy
#5
REVIEW
Wengen Chen, Vasken Dilsizian
PURPOSE OF REVIEW: The purpose of this review is to explore the pathophysiology of Takotsubo cardiomyopathy by appraising the interplay between myocardial perfusion, function, metabolism, and, particularly, sympathetic innervation. RECENT FINDINGS: A number of hypotheses have been proposed to explain the pathogenesis of Takotsubo cardiomyopathy, which include (1) catecholamine cardiac toxicity, (2) myocardial sympathetic innervation disruption, (3) coronary vasospasm, (4) myocardial microvascular dysfunction, and (5) aborted myocardial infarction...
June 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28438866/soluble-urokinase-type-plasminogen-activator-receptor-predicts-all-cause-5-year-mortality-in-ischemic-stroke-and-tia
#6
Juha Onatsu, Mikko Taina, Pirjo Mustonen, Marja Hedman, Antti Muuronen, Otso Arponen, Miika Korhonen, Pekka Jäkälä, Ritva Vanninen, Kari Pulkki
AIM: We evaluated soluble urokinase-type plasminogen activator receptor (suPAR) levels in different stroke subtypes and assessed their prognostic value regarding 5-year outcomes. MATERIALS AND METHODS: The study included 117 stroke patients (81 males; mean=age 61±11 years) with suspected cardioembolic stroke whose plasma suPAR concentration was assessed. Altogether, 20 (17.1%) patients suffered from stroke as a result of cardioembolism, 12 (10.3%) from large-artery atherosclerosis, 9 (7...
May 2017: In Vivo
https://www.readbyqxmd.com/read/28433206/efficacy-and-safety-of-rivaroxaban-versus-warfarin-in-patients-from-mainland-china-with-nonvalvular-atrial-fibrillation-a-subgroup-analysis-from-the-rocket-af-trial
#7
Yihong Sun, Dayi Hu, Susanna Stevens, Yuliya Lokhnygina, Richard C Becker, Scott D Berkowitz, Günter Breithardt, Werner Hacke, Jonathan L Halperin, Graeme J Hankey, Kenneth W Mahaffey, Christopher C Nessel, Jonathan P Piccini, Daniel E Singer, Keith A A Fox, Manesh R Patel
BACKGROUND: The ROCKET AF study evaluated once-daily rivaroxaban versus dose-adjusted warfarin for the prevention of stroke and systemic embolism in patients with atrial fibrillation (AF). In this analysis, we compared rivaroxaban with warfarin in patients with AF from China, East Asia, and the rest of the world (ROW). METHODS AND RESULTS: We assessed baseline demographics and interaction of treatment effects of rivaroxaban versus warfarin among patients from mainland China, other East Asian countries, and ROW...
April 13, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28431637/transcranial-color-coded-sonography-of-vertebral-artery-for-diagnosis-of-right-to-left-shunts
#8
Teppei Komatsu, Yuka Terasawa, Ayumi Arai, Kenichi Sakuta, Hidetaka Mitsumura, Yasuyuki Iguchi
BACKGROUND: It is unknown whether contrast transcranial color-coded sonography of vertebral artery monitoring via the foramen magnum window (cTCCS-VA) is useful to detect right-to-left shunt (RLS). We investigated whether cTCCS-VA can be proposed as an alternative to middle cerebral artery monitoring via the temporal bone window (cTCCS-MCA) for RLS detection, as compared with contrast transesophageal echocardiography (cTEE). METHODS: We evaluated 112 patients with ischemic stroke or transient ischemic attack...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28431593/high-on-treatment-platelet-reactivity-to-aspirin-and-clopidogrel-in-ischemic-stroke-a-systematic-review-and-meta-analysis
#9
Aidonio Fiolaki, Aristeidis H Katsanos, Athanassios P Kyritsis, Styliani Papadaki, Maria Kosmidou, Iraklis C Moschonas, Alexandros D Tselepis, Sotirios Giannopoulos
Emerging studies highlight high on-treatment of platelet reactivity (HTPR) as a major hindrance to the secondary prevention of cardiovascular ischemic events. The aim of this systematic review and meta-analysis is to assess the prevalence of HTPR in patients with ischemic stroke (IS) or transient ischemic attack (TIA) and reveal a possible relation with a higher risk of cerebrovascular event recurrence. Studies were selected if they reported absolute numbers or percentages of HTPR with ASA or clopidogrel in IS/TIA patients at any time point after the cerebrovascular event onset and assessed with any type of platelet function tests...
May 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28430816/possible-increase-in-insulin-resistance-and-concealed-glucose-coupled-potassium-lowering-mechanisms-during-acute-coronary-syndrome-documented-by-covariance-structure-analysis
#10
Satoshi Ito, Tomohisa Nagoshi, Kosuke Minai, Yusuke Kashiwagi, Hiroshi Sekiyama, Akira Yoshii, Haruka Kimura, Yasunori Inoue, Kazuo Ogawa, Toshikazu D Tanaka, Takayuki Ogawa, Makoto Kawai, Michihiro Yoshimura
OBJECTIVE: Although glucose-insulin-potassium (GIK) therapy ought to be beneficial for ischemic heart disease in general, variable outcomes in many clinical trials of GIK in acute coronary syndrome (ACS) had a controversial impact. This study was designed to examine whether "insulin resistance" is involved in ACS and to clarify other potential intrinsic compensatory mechanisms for GIK tolerance through highly statistical procedure. METHODS AND RESULTS: We compared the degree of insulin resistance during ACS attack and remission phase after treatment in individual patients (n = 104)...
2017: PloS One
https://www.readbyqxmd.com/read/28428531/-effective-anticoagulation-therapy-prior-to-surgical-excision-of-an-aortic-valve-papillary-fibroelastoma-diagnosed-after-a-transient-cerebral-ischemic-attack-report-of-a-case
#11
Masashi Toyama, Tomonobu Abe, Masato Nakayama, Bummei Sato, Osamu Ohno
Cardiac papillary fibroelastoma is reported to be the 2nd most common cardiac tumor following myxoma. Owing to the risk of embolism, early surgical excision is the treatment of choice. We report a case of effective anticoagulation therapy prior to surgical excision of an aortic valve papillary fibroelastoma. A 78-year-old man was admitted to our hospital because of transient cerebral ischemic attack. The symptom was relieved in a short period. Echocardiography revealed a tumor at the aortic valve. Cardiac computed tomography revealed a sea-anemone-like appearance of the tumor...
April 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28425027/10-year-results-of-on-x-bileaflet-mechanical-heart-valve-in-the-aortic-position-low-target-inr-regimen-in-japanese
#12
Hideki Teshima, Masahiko Ikebuchi, Yosuke Miyamoto, Ryuta Tai, Toshikazu Sano, Yusuke Kinugasa, Hiroyuki Irie
OBJECTIVES: This study was designed to establish clinical outcomes after aortic valve replacement (AVR) with On-X bileaflet mechanical heart valve. METHODS: Between 2006 and 2014, AVR was performed to 686 patients. Of them, 78 patients using On-X valve were enrolled. The mean age was 65 ± 11 years (ranged 33-85); 65% were men; and 81% were in sinus rhythm preoperatively. Calcific or degenerative tricuspid aortic valve was present in 73%. Concomitant procedures included coronary artery bypass grafting (22%), Bentall (8%), mitral valve procedure (3%) and other (9%)...
April 19, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28424012/internal-carotid-artery-agenesis-a-case-report-and-review-of-literature
#13
Shuo Li, Kusum Hooda, Nishant Gupta, Yogesh Kumar
Congenital agenesis of the internal carotid artery is a very rare anomaly. Intracranial circulation in the involved internal carotid artery territory is maintained by collateral circulation from the contralateral internal carotid artery through the anterior communicating artery and from the vertebrobasilar system through the posterior communicating artery. Usually, patients with internal carotid artery agenesis are asymptomatic due to collateral circulation, but they may present with headache, seizures, or transient ischemic attack...
April 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28422448/the-benefits-of-clinical-facilitators-on-improving-stroke-care-in-acute-hospitals-a-new-program-for-australia
#14
Tara Purvis, Karen Moss, Linda Francis, Karen Borschmann, Monique F Kilkenny, Sonia Denisenko, Christopher F Bladin, Dominique A Cadilhac
BACKGROUND: Care gaps for stroke lead to preventable disability and deaths. The Victorian State Government implemented a program of employing clinical Facilitators on a fixed-term basis for up to three years (2008-2011) in eight hospitals to improve stroke care. The Facilitators were to establish stroke units where absent, implement evidence-based management protocols and provide staff education within an agreed work plan. The aim of this study was to determine if the Facilitator role was associated with improved stroke care, and to describe factors supporting or mitigating enhancements to care...
April 19, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28422144/risk-and-prediction-of-sudden-cardiac-death-and-ventricular-arrhythmias-for-patients-with-atrial-fibrillation-a-nationwide-cohort-study
#15
Tze-Fan Chao, Chia-Jen Liu, Ta-Chuan Tuan, Su-Jung Chen, Tzeng-Ji Chen, Gregory Y H Lip, Shih-Ann Chen
Sudden cardiac death (SCD) is the most devastating manifestation of ventricular arrhythmias (VAs), and is the leading cause of mortality among atrial fibrillation (AF) patients. The goal of the present study was to investigate the incidence of SCD/VAs amongst patients with and without AF. We also aimed to identify important risk factors of SCD/VAs among AF patients. Using the "National Health Insurance Research Database" in Taiwan, a total of 352,656 AF and 352,656 non-AF patients without antecedent SCD/VAs were identified...
April 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28420316/persistence-of-secondary-prevention-medication-and-related-factors-for-acute-ischemic-stroke-and-transient-ischemic-attack-in-china
#16
Yue Jiang, Xiaomeng Yang, Zixiao Li, Yuesong Pan, Yilong Wang, Yongjun Wang, Ruijun Ji, Chen Wang
OBJECTIVE: We recently measured the longitudinal use of secondary prevention medication following hospital discharge and the factors influencing persistence in patients with acute ischemic stroke (AIS) and transient ischemic attack (TIA) in China. METHODS: Patients with AIS and TIA who were enrolled in the China National Stroke Registry II from June 2012 to January 2013 were surveyed to determine persistence. The medications included antiplatelet therapies, warfarin, antihypertensive therapies, statins, and diabetes medications...
April 19, 2017: Neurological Research
https://www.readbyqxmd.com/read/28419982/resting-heart-rate-and-ischemic-stroke-in-patients-with-heart-failure
#17
Koki Nakanishi, Marco R Di Tullio, Min Qian, John L P Thompson, Arthur J Labovitz, Douglas L Mann, Ralph L Sacco, Patrick M Pullicino, Ronald S Freudenberger, John R Teerlink, Susan Graham, Gregory Y H Lip, Bruce Levin, Jay P Mohr, Richard Buchsbaum, Conrado J Estol, Dirk J Lok, Piotr Ponikowski, Stefan D Anker, Shunichi Homma
BACKGROUND: Although high resting heart rate (RHR) is known to be associated with an increased risk of mortality and hospital admission in patients with heart failure, the relationship between RHR and ischemic stroke remains unclear. This study is aimed at investigating the relationship between RHR and ischemic stroke in patients with heart failure in sinus rhythm. METHODS: We examined 2,060 patients with systolic heart failure in sinus rhythm from the Warfarin versus Aspirin in Reduced Cardiac Ejection Fraction trial...
April 19, 2017: Cerebrovascular Diseases
https://www.readbyqxmd.com/read/28416405/development-validation-and-assessment-of-an-ischemic-stroke-or-transient-ischemic-attack-specific-prediction-tool-for-obstructive-sleep-apnea
#18
Jason J Sico, H Klar Yaggi, Susan Ofner, John Concato, Charles Austin, Jared Ferguson, Li Qin, Lauren Tobias, Stanley Taylor, Carlos A Vaz Fragoso, Vincent McLain, Linda S Williams, Dawn M Bravata
BACKGROUND: Screening instruments for obstructive sleep apnea (OSA), as used routinely to guide clinicians regarding patient referral for polysomnography (PSG), rely heavily on symptomatology. We sought to develop and validate a cerebrovascular disease-specific OSA prediction model less reliant on symptomatology, and to compare its performance with commonly used screening instruments within a population with ischemic stroke or transient ischemic attack (TIA). METHODS: Using data on demographic factors, anthropometric measurements, medical history, stroke severity, sleep questionnaires, and PSG from 2 independently derived, multisite, randomized trials that enrolled patients with stroke or TIA, we developed and validated a model to predict the presence of OSA (i...
April 14, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28415099/p594contrast-transthoracic-echocardiography-as-a-gatekeeper-for-patent-foramen-ovale-closure
#19
M Muratori, G Italiano, E Innocenti, L Fusini, M Mapelli, G Tamborini, S Ghulam Ali, P Gripari, A Maltagliati, F Celeste, M Pepi
Background.: The presence of patent foramen ovale (PFO) has been linked to many illness, including cryptogenic stroke, transient ischemic attack, migraine, platypnea-orthodeoxia syndrome and decompression sickness in scuba divers. Transesophageal echocardiography is the gold standard technique for the visualization of atrial septal anatomy, but it is a secondary level exam, not always available, with additional associated costs and not completely free from procedural risks. Standard transthoracic echocardiography (TTE) has a too low sensitivity for PFO screening...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28412909/prolonged-perfusion-predicts-recurrent-ischemic-stroke-but-not-transient-ischemic-attack-in-patients-with-symptomatic-intracranial-stenosis
#20
Linfang Lan, Xinyi Leng, Vincent Ip, Thomas Leung, Yannie Soo, Jill Abrigo, Ka Sing Wong
BACKGROUND: Intracranial arterial stenosis (ICAS) is the dominant cause for ischemic stroke worldwide, with hemodynamic compromise as a crucial contributor. Prolonged perfusion is commonly observed in ICAS patients on CT perfusion (CTP) maps, while the clinical significance of this perfusion pattern has not been elucidated. METHODS: Patients having symptomatic ICAS of 50-99% stenosis with sustained downstream cerebral blood flow (CBF) were enrolled into this study...
April 13, 2017: Current Neurovascular Research
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