Doppler tissue analysis of atrial electromechanical coupling in paroxysmal atrial fibrillation
نویسندگان
چکیده
منابع مشابه
Electromechanical Abnormalities in Patients with Paroxysmal Atrial Fibrillation
Background: The loss of effective atrial contraction is associated with an increased thromboembolic risk. Aim: To study the electromechanical coupling of the atria in patients with paroxysmal atrial fibrillation (time of occurrence of the episodes <48 hours) using pulsed-wave tissue Doppler imaging. Materials and methods: The study included 51 patients (26 men, 25 women; mean age 59.84±1.60 yea...
متن کاملInteratrial dyssynchrony on tissue Doppler imaging predicts progression to chronic atrial fibrillation in patients with non-valvular paroxysmal atrial fibrillation.
OBJECTIVE To determine prospectively whether interatrial dyssynchrony detected by tissue Doppler imaging (TDI) is useful for predicting the progression to chronic atrial fibrillation (CAF) in patients with non-valvular paroxysmal AF (PAF). METHODS Thirty-seven patients with non-valvular PAF were prospectively followed after echocardiography. The interval of time from initiation of the P wave ...
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Both autonomic nerve activity and electrical remodeling are important in atrial arrhythmogenesis. Therefore, dogs with sympathetic hyperinnervation, myocardial infarction (MI), and complete atrioventricular block (CAVB) may have a high incidence of atrial arrhythmias. We studied eight dogs (experimental group) with MI, CAVB, and sympathetic hyperinnervation induced either by nerve growth factor...
متن کاملDelayed right atrial lateral electromechanical coupling relative to the septal one can be associated with paroxysmal atrial fibrillation.
BACKGROUND Non-invasive prediction of paroxysmal atrial fibrillation (PAF) is one of the most recent interests of cardiology. AIM The current study investigates the relationship between the atrial electromechanical coupling time (EMCT) and PAF. PATIENTS AND METHODS A group of 35 patients with PAF was compared with a group of 37 subjects without PAF. Pulsed wave tissue Doppler evaluations of...
متن کاملDispersion of atrial repolarization in patients with paroxysmal atrial fibrillation.
UNLABELLED To study the role of the dispersion of atrial repolarization (DAR) in the genesis of atrial fibrillation (AF), monophasic action potentials (MAP) were recorded simultaneously from a catheter at the high lateral right atrium (HLRA) and a catheter moving around the high, middle and low lateral right atrium (RA) the high, anterior and posterior septal RA and the RA appendage in 15 patie...
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ژورنال
عنوان ژورنال: Journal of the American Society of Echocardiography
سال: 2005
ISSN: 0894-7317
DOI: 10.1016/j.echo.2004.08.029