冠心病患者心室晚电位与QTc离散度的关系

relation of ventricular late potential and QTcd in patients with coronary artery disease

目的:探讨冠心病患者心室晚电位(VLP)与 QTc 离散度(QTcd)的关系及 QTcd 在预测室性心动过速(室速)、心室颤动(室颤)发生方面的价值。方法:观察了冠状动脉硬化性心脏病(冠心病)患者心室晚电位阳性组与阴性组 QTcd 的改变。结果:VLP 阳性组 QTcd 明显高于 VLP 阴性组(63.2±11.2和41.8±17.1,P<0.01),VLP 阳性组室速和室颤的发生率显著高于 VLP 阴性组(26.7%对3.3%,P<0.05),发生室速和室颤者 QTcd≥80ms。结论:本组结果提示 QTcd 与 VLP 具有良好的平行性,QTcd 可作为预测冠心病患者室颤发生的一种简便可靠指标。

Objective:To study the relation of ventricular late potentials(VLP)and QTc dispersion (QTcd)in patients with coronary artery disease and the predictive value of QTcd on ventricular fibrilation (VF)and ventricular tachycardia(VT).Methods:The changes of QTcd in patients with VLP positive and VLP negitive were observed.Results:QTcd of VLP positive group is significantly higher than that of VLP negitive group(63.2±19.2 vs 41±17.1,P<0.01).Occurrence of VT and VF in VLP positive group was significantly higher than that in VLP negitive(26.7% vs 3.3%,P<0.05).QTed in patients with episodes of VF were equal to or more than 80 ms.Conclusion:The QTcd is a convenient and reli- able predictor of ventricular fibrilation in patients with coronary artery disease.