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心肌梗塞复发的危险因素包括年龄、过去病史、梗塞大小及其他并存问题,如心肌缺血、心衰、室性异位搏动等。前壁梗塞比后壁梗塞预后更差。梗塞早期或后期发生的左室衰竭均使死亡率增加。室早对整个死亡率及猝死率均有高度预测性,且与左室功能不全程度密切相关。射血分数(EF)低或室早均使死亡率增加2倍,如二者并存,则死亡率增加3倍。梗塞后将近一半患者的死亡是猝死。而猝死更易发生于梗塞后高频室早的患者。β阻滞剂通过降低心率、血压、改善心肌供氧,使死亡率下降。β阻滞剂可改变缺血性心脏病面临的两个主要危险:心肌缺血的发展与危
Risk factors for recurrence of myocardial infarction include age, past medical history, infarct size, and other coexisting issues such as myocardial ischemia, heart failure, and ventricular ectopic beats. The anterior wall infarct is worse than the posterior wall infarct. Left ventricular failure, both early and late, increases mortality. As early as the entire mortality and sudden death rate are highly predictive, and is closely related to the degree of left ventricular dysfunction. A low ejection fraction (EF) or an early morning compartment increased the mortality rate by a factor of 2, and if they coexisted, the mortality rate increased threefold. Nearly half of patients died of sudden death after infarction. Sudden death more likely to occur in patients with early post-infarction HF room. Beta blockers by reducing heart rate, blood pressure, improve myocardial oxygen supply, so that mortality decreased. Beta blockers can change the two main risks of ischemic heart disease: the development of myocardial ischemia and risk