نتایج جستجو برای: atrial appendage atrial fibrillation echocardiography
تعداد نتایج: 141868 فیلتر نتایج به سال:
BACKGROUND The multicenter PROTECT AF study (Watchman Left Atrial Appendage System for Embolic Protection in Patients With Atrial Fibrillation) was conducted to determine whether percutaneous left atrial appendage closure with a filter device (Watchman) was noninferior to warfarin for stroke prevention in atrial fibrillation. METHODS AND RESULTS Patients (n=707) with nonvalvular atrial fibril...
OBJECTIVE To compare the acute effects of right atrial appendage, atrial septal, coronary sinus os, and dual site pacing on the duration of atrial activation. METHODS 20 patients with a variety of cardiac conditions underwent an intracardiac electrophysiological study. Electrograms were recorded from the right atrial appendage and at multiple sites within the coronary sinus. The duration of a...
OBJECTIVE Our objective is to explore the correlation between the mouth diameter of left atrial appendage (LAA) and stroke risk score in patients with atrial fibrillation (AF), to find the effective ways to improve diagnosis and treatment level. PATIENTS AND METHODS 112 patients with AF during January 2011-April 2013 were retrospectively analyzed, including 79 cases with paroxysmal AF and 32 ...
BACKGROUND Atrial fibrillation (AF) is the most common arrhythmia seen in adults. Atrial stunning is defined as the temporary mechanical dysfunction of the atrial appendage developing after AF has returned to sinus rhythm (SR). OBJECTIVES We aimed to evaluate atrial contractile functions by strain and strain rate in patients with AF, following pharmacological and electrical cardioversion and ...
The idea that mechanical intervention to close the left atrial appendage (LAA) might reduce complications from atrial fibrillation (AF) is at least 70 years old. Early attempts to test this idea in humans with surgical ligation were abandoned after only a few years for 2 reasons. First, proponents soon realized that they had no way to choose the candidates believed most likely to benefit withou...
OBJECTIVE Pulmonary vein isolation is curative in selected patients with atrial fibrillation. The objective of this study was to assess the feasibility and safety (midterm results) of video-assisted thoracoscopic epicardial pulmonary vein isolation. METHODS Twenty-seven patients (22 male patients) with atrial fibrillation (18 paroxysmal, 4 persistent, and 5 permanent; average age, 57 years) u...
BACKGROUND Together with pulmonary veins, many extrapulmonary vein areas may be the source of initiation and maintenance of atrial fibrillation. The left atrial appendage (LAA) is an underestimated site of initiation of atrial fibrillation. Here, we report the prevalence of triggers from the LAA and the best strategy for successful ablation. METHODS AND RESULTS Nine hundred eighty-seven conse...
BACKGROUND A free-floating ball thrombus in the left atrium is a rare clinical condition. However, the diagnosis of this condition has been facilitated by the advent and development of echocardiography and multi-detector row computed tomography (MDCT) and several cases have been reported. CASE REPORT We report a case of a 75-year-old woman who had recurrent giant spherical thrombi in the left a...
Çor triatriatum is a cardiac anomaly that is due to failure of resorption of the common pulmonary vein results in a left atrium divided by an abnormal fibromascular diaphragm into posterosuperior and the anteroinferior chambers. The communication between the divided atrial chambers may be large, small or absent, depending on the size of the opening (s) in the diaphragm, which determines the d...
BACKGROUND Tachycardia-mediated mechanical remodeling of the atrium is considered central to the pathogenesis of thromboembolism associated with chronic atrial fibrillation. Whether atrial mechanical remodeling also occurs in response to atrial stretch induced by chronic asynchronous ventricular pacing in patients with permanent pacemakers is unknown. METHODS AND RESULTS The study design was ...
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