摘要
背景:先前的研究已表明,QRS波群时间和QT离散度(QTd)可用作室性快速性心律失常(VA)易患风险的预测因素。QRS波群时间延长表示局部心肌壁收缩失同步,QTd增加也可表示心肌复极化的变异。本研究旨在检测左室舒张期末直径(LVEDD)作为VA易患性预测因素的价值。方法:对88例行电生理(EP)检查的患者进行评价。应用含有高达3次期前刺激的标准方案进行EP检查。
Background: Prior studies have shown the utility of using both QRS duration and QT dispersion(QTd) as predictors of risk for ventricular tachyarrhythmias(VA). Lengthening of the QRS duration represents dyssynchrony of regional myocardial wall contraction, and increased QTd similarly represents variations in myocardial repolarization. We sought to examine the left ventricular end diastolic diameter(LVEDD) as a predictor of VA susceptibility. Methods: Eighty-eight patients referred for electrophysiologic(EP) ...
