Methods:QT intervals,QTd,heart rate corrected QT interval(QTc) and QTcd of the electrocardiogrames recorded before and after revascularization were analyzed in 65 patients with coronary heart disease.

• 方法 :对 6 5例冠心病患者行冠状动脉球囊成形 (PTCA)及冠状动脉搭桥 (CABG)手术前后的 2 4小时内 12导联心电图 QT间期、QTc、QTd及 QTcd四项指标进行分析。