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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: Previous studies have shown that QRS complex time and QT dispersion (QTd) can be used as predictors of risk of ventricular tachyarrhythmia (VA). QRS complex time extension of the local myocardial wall contraction loss of synchronization, QTd increase can also be expressed myocardial repolarization variation. The aim of this study was to determine the value of LVEDD as a predictor of VA susceptibility. Methods: Eighty-eight patients undergoing electrophysiology (EP) were evaluated. An EP test was performed using a standard protocol containing up to 3 pre-stimulation sessions.