Does APD Gradient Indicate Dispersion of Repolarization ?
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چکیده
منابع مشابه
Does APD gradient indicate dispersion of repolarization ?
Does APD Gradient Indicate Dispersion of Repolarization ? To the Editor: The article by Glukhov et al1 is a very important study, providing, as it does, direct measurement of action potential durations (APD) transmurally in the human heart. We commend the authors for providing the first evidence for M cells in the human heart. However, we dispute the assumption throughout the article that APD g...
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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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BACKGROUND Repolarization dispersion (Rd) is frequently mentioned as a predictor of cardiac abnormalities. We present a new measure of Rd based on the root-mean-square (RMS) curve of an ECG lead set and compare its performance with that of the commonly used QT dispersion (QTd) measure with the use of recovery times measured from directly recorded canine electrograms. METHODS AND RESULTS Using...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 2010
ISSN: 0009-7330,1524-4571
DOI: 10.1161/circresaha.110.224048