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观侧２２例心肌梗塞患者冠状动脉侧支循环与心室晚电位。对比研究结果：心肌梗塞后侧支循环良好者，左室射血分数提高（Ｐ＜０．００５），缺血性心律失常减少（Ｐ＜０．０５）；心室晚电位（ＱＲＳ－Ｄ、ＬＡＳ、ＲＭＳ４０）３项指标在侧支循环不良组与良好组之间存在着非常显著的差异。提示：冠状动脉侧支循环的建立对维护患者心功能、维持心肌电活动的稳定性、减少心脏猝死机率均有积极作用。
View side of 22 cases of myocardial infarction patients with coronary collateral circulation and ventricular late potentials. The results of comparative study showed that left ventricular ejection fraction (P <0.005) and ischemic arrhythmia decreased (P <0.05), ventricular late potentials (QRS-D, LAS , RMS40) 3 indicators in collateral circulation poor group and good group there is a very significant difference. Tip: The establishment of coronary collateral circulation in the maintenance of patients with cardiac function, to maintain the stability of myocardial electrical activity, reduce the incidence of sudden cardiac death have a positive effect.