Methods QT dispersion (QTd) and corrected QT dispersion (QTcd)in 98 patients with AMI and 40 Patients with before and after thrombolyfic therapy in them were measured from the 12lead ECG, with 100 cases of healthy people as control group.

• 方法：测量98例AMI患者常规12导联心电图QT间期及其中40例经溶栓治疗者溶栓前后QT间期，计算其QTd及校正后的QT离散度（QTcd），并设正常对照组。