心电图QT变量对VT VF及心性猝死的预测价值

PREDICTIVE VALUE OF QT VARIABLE FOR VT,VF AND SUDDEN CARDIAC DEATH

目的 探讨QT变量对室性心动过速 (VT)、心室颤动 (VF)及 /或心性猝死的预测价值。方法 将5 38例AMI、急性心肌缺血患者的心电图进行分组、分类 ,对心电图QT变量进行测量、统计分析。结果 QTc、JTc、QT/TQ延长者 ,VT、VF及 /或心性猝死的发生率明显大于QTc、JTc、QT/TQ值正常者 (P <0 .0 5、<0 .0 1) ;VT、VF及 /或心性猝死QTd、JTd、QTcd明显大于无VT、VF及 /或心性猝死者 (P <0 .0 5、<0 .0 1)。结论 QT变量的增大 (示心室复极异常 )对预测AMI、急性心肌缺血发生VT、VF及 /或心性猝死有重要价值 ,其中QTc、JTc、QTd、QTcd是预测VT、VF及心性猝死的敏感指标。

Objective To explore the predictive value of QT variable for VT,VF and sudden cardiac death.Methods ECG of 538 cases with AMI or acute myocardial ischemia were divided and classified and QT vaviable were measured and analysed.Results The incidence of VT,VF and sudden cardiac death was higher in prolonging QTc,JTc QT/TQ cases than that of norm(P<0.05).QTd,JTd,QTcd were obviously higher in VT,VF and sudden cardial death ECG.Conclusion The increase of QT Vavible has a important predictive value for incidence of VT,VF and sudden cardiac death in AMI and acute myocardial ischemia patients.QTc,JTc,QTd,QTcd are sensitive index in predicting VT,VF and sudden cardiac death.