Objective Toinvesryngste the change of QT dispersion( QTd) and its effect on prognosis in patient with acute myo-cardial infrction ( AMI) before and after intravenous thrombolytic therapy.

• 目的探讨急性心肌梗塞(AMI)患者静脉溶栓治疗前后QT间期离散度(QTD)变化及对愈后的影响。