心肌梗塞(MI)后二期并发症(Secondary complication) MI急性期间(数小时至数日)常发生左室功能不全和心律失常,MI存活者1个月内死亡率高达30％即缘于此。亚急性期间(出院1年内)约1/3存活出院者反覆发作心绞痛、充血性心力衰竭和非致死性心肌梗塞;死亡率约8～12％。慢性期间(出院1年后)年死亡率约3～4％。活动性和/或反覆性心肌缺血是亚急性期和慢性期二期并发症的主要 Secondary complication MI Secondary dysfunction and arrhythmias often occur during the acute phase of MI (hours to days), with mortality of up to 30% within 1 month of MI survivors . Approximately one-third of survivors discharged in the subacute period (within 1 year of discharge) recurred angina pectoris, congestive heart failure and non-fatal myocardial infarction; the mortality rate was about 8-12%. Chronic period (1 year after discharge) annual mortality of about 3 to 4%. Active and / or recurrent myocardial ischemia is secondary to both subacute and chronic phases of complications