Effects of hypokalemia on transmural dispersion of ventricular repolarization in left ventricular myocardium
نویسندگان
چکیده
منابع مشابه
Ventricular hypertrophy amplifies transmural repolarization dispersion and induces early afterdepolarization.
The effects of left ventricular hypertrophy (LVH) on the generation of phase 2 early afterdepolarization (EAD) and transmural dispersion of repolarization (TDR) were assessed using arterially perfused rabbit ventricular wedge preparations. Transmembrane action potentials from epicardium, subendocardium, and endocardium were simultaneously recorded together with a transmural ECG. Transmural acti...
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Background & Aims: One of the important aims of quantitative cardiac image processing is the clarification of myocardial motions in order to derive biomechanical behavior of the heart in the disease condition. In this study we presented a computerized analysis method for detecting the instantaneous myocardial changes by using 2D echocardiography images. Methods: The analysis was performed on th...
متن کاملCisapride-induced transmural dispersion of repolarization and torsade de pointes in the canine left ventricular wedge preparation during epicardial stimulation.
BACKGROUND Cisapride, a gastrointestinal prokinetic agent, was recently withdrawn from the market because of its propensity to induce torsade de pointes (TdP) arrhythmias. The present study examines the electrophysiological actions of cisapride in the isolated arterially perfused canine left ventricular wedge preparation. METHODS AND RESULTS Transmembrane action potentials from epicardial and...
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Background—Cisapride, a gastrointestinal prokinetic agent, was recently withdrawn from the market because of its propensity to induce torsade de pointes (TdP) arrhythmias. The present study examines the electrophysiological actions of cisapride in the isolated arterially perfused canine left ventricular wedge preparation. Methods and Results—Transmembrane action potentials from epicardial and M...
متن کاملDispersion of ventricular repolarization: reality? Illusion? Significance?
The QT interval is considered to be a surrogate of cellular action potential duration. However, it yields a limited view of the complex electrogenesis of the ventricular repolarization (VR). Evidence of T-wave end inequality among surface ECG traces back to Wilson et al, and it was recently revived by the concept of dispersion. Because of its apparent simplicity, QT dispersion became fashionabl...
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ژورنال
عنوان ژورنال: Asian Pacific Journal of Tropical Medicine
سال: 2013
ISSN: 1995-7645
DOI: 10.1016/s1995-7645(13)60079-6