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عنوان فارسی مقاله:
اختلال عملکرد زائده دهلیز چپ در سکته آمبولیک حاد بیماران جوان با ریتم سینوسی: همبستگی با سرعت حلقوی سیستولیک میترال داپلر بافت
عنوان انگلیسی مقاله:
Left atrial appendage dysfunction in acute embolic stroke young patients with sinus rhythm: Correlation with Tissue Doppler mitral annular systolic velocity
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Cardio-embolic stroke is an important clinical issue, because it is the most common cause of death in patients with acute ischemic stroke.1,2 Previous clinical reports have prescribed Atrial fibrillation “AF” as independent risk factor for ischemic stroke, increasing the risk by fivefold.3,4 In a large cohort of patients with paroxysmal AF on aspirin therapy had a stroke rate similar to sustained AF as well as similar stroke risk factors.5 The left atrial appendage (LAA) was reported to be a major source of thrombo-embolism in stroke patients with atrial fibrillation.6e8 Many clinical reports have indicated that left atrial mechanical remodeling is associated with thrombus formation in the LAA.9e11 The presence of spontaneous echocardiographic contrast or reduced LAA peak flow velocity, as measured by transesophageal echocardiography (TEE), was reported to be useful for detecting LAA dysfunction, which causes thrombus formation in the LAA.12,13 LAA dysfunction may play a role as an underlying cause of cardiogenic brain embolism not only in chronic AF but also in paroxysmal AF.14 Independent of the basic rhythm there is a close relationship between LAA-eV and qualitative parameters of elevated thromboembolic risk, and LAAeV could be a quantitative parameter for risk stratification. LAA-eV 0.55 m/sec is associated with low risk of LAA thrombosis and spontaneous echo contrast.15,16 While transthoracic echocardiography (TTE) is widely used as a screening tool because it is a non-invasive procedure, it is thought to be difficult to detect LAA thrombus and evaluate LAA dysfunction by TTE. Recently pulsed wave tissue Doppler has become a reproducible and readily available technique for measuring atrial function parameters.17,18 The LAA has a close anatomic and functional relation with lateral mitral annulus and thus annular velocities obtained by TDI may reflect the LAA function.19 The aim of the present study is to evaluate LAA dysfunction using tissue Doppler mitral annular systolic velocity in acute embolic stroke young patients with sinus rhythm.
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کلمات کلیدی:
Abstract 13540: Left Atrial Appendage Dysfunction in Acute Cerebral ... circ.ahajournals.org/content/126/Suppl_21/A13540.full by K Kaneko - 2012 Nov 20, 2012 - Abstract 13540: Left Atrial Appendage Dysfunction in Acute Cerebral Embolism Patients with Sinus Rhythm. Correlation with Pulse Wave ... Left atrial appendage thrombus is not uncommon in patients with ... www.onlinejacc.org/content/accj/25/2/452.full.pdf?download=true frequency of left atrial thrombus in patients with acute atrial fibrillation. Bockground. ... embolism, congestive heart failure and death (3-5). The appropriate ... Stroke: Investigation and management https://books.google.com/books?isbn=0444520058 Marc Fisher - 2009 - Medical Algorithm for diagnosis of cardio-embolic cerebral ischemia The diagnosis of ... (mainly in acute myocardialinfarction and dilatative cardiomyopathies), left atrial ... echo contrast and left atrial appendage dysfunction, endocarditic vegetations ... Echocardiographic assessment of the left atrial appendage - JACC www.onlinejacc.org/content/accj/34/7/1867.full.pdf?download=true Cardiogenic embolism accounts for. 15% of ischemic ... believed to be the source of embolism in a substantial number of ... Nevertheless, LAA dysfunction in various pathophysiologic ..... AF, patients with severe mitral stenosis typically demon-. Feigenbaum's Echocardiography - Google Books Result https://books.google.com/books?isbn=0781795575 William F. Armstrong, Thomas Ryan, Harvey Feigenbaum - 2010 - Medical Left atrial appendage “stunning” after electrical cardioversion of atrial flutter: an ... Natural history of right ventricular dysfunction after acute pulmonary embolism. Transthoracic Echocardiographic Predictors of the Left Atrial ... https://www.jstage.jst.go.jp/article/tjem/208/4/208_4_291/_pdf by N Uslu - 2006 - Cited by 15 - Related articles Left Atrial Appendage Contraction Velocity in Stroke Patients with Sinus Rhythm. ... is desirable to obtain information regarding LAA function by transthoracic ... newly diagnosed acute embolic stroke (42 patients) and transient ischemic attack ( ...
