不同部位室性早搏合并心肌缺血的对比研究

Study on the Myocardial Ischemia Rates of Ventricular Premature Beats from Different Original Positions

目的对比研究不同起源部位室性早搏合并心肌缺血状况。方法应用同步12导联动态心电图检测482例室性早搏患者,比较不同部位室性早搏合并心肌缺血发生率。结果右室流出道、左室流出道早搏合并心肌缺血发生率分别为51.83%和50.00%;右室心尖部、左室心尖部早搏合并心肌缺血发生率分别为50.88%和73.81%;右室下部早搏合并心肌缺血发生率为58.62%;左室侧壁早搏合并心肌缺血发生率为70.83%;右室早搏、左室早搏总计合并心肌缺血发生率分别为52.81%和62.57%。结论室性早搏半数或半数以上合并心肌缺血;左室早搏比右室早搏合并缺血率高;左室心尖部和侧壁早搏合并心肌缺血率最高。

Objective To study the incidence of myocardial ischemia with ventricular premature beats from different original positions. Methods To examine 482 patients with ventrieular premature beats using synchronism 12-leads monitoring electrocardiograms and calculate incidence of myocardial ischemia of the ventricular premature beats from different original positions. Results The incidence of myocardial ischemia with ventricular premature beats from the fight ventricular outflow and the left ventricular outflow were 51.83% and 50.00% respectively. The myocardial ischemia rates of ventricular premature beat from fight ventricular apex and left ventricular apex were 50.88% and 73.81% respectively. The incidence of myocardial isehemia with ventricular premature beat from inferior part of the right ventricle was 58.62%. The incidence of myocardial isebemia with ventrieular premature beat from lateral wall of the left ventricle was 70.83.%. The incidence of total myocardial isehemia of right ventricular premature beat and left ventricular beat were 52.81% and 62.57% respectively. Conclusion The incidence of myocardial ischemia with ventricular premature beats was significantly increased. The incidence of total myecardial ischemia with left ventricular premature beats was higher than that of right ventricular premature beat. The highest incidence of myocardial ischemia with ventricular premature beats was that from left ventricular apex and lateral wall.