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以往,急性心肌梗死住院病人的死亡率高达30％～50％,即使幸存下来也只有三分之一的人能够恢复原有工作。如今由于医疗技术的进步,心肌梗死的死亡率已降至10％～ 15％。如果康复期配合合理的锻炼, 不仅可以缩短住院时间,而且60％以上的患者都能恢复原有工作。心肌梗死患者的康复锻炼不同于正常人的体育锻炼,既要让心脏受到一定的锻炼,又不能让它负担过重。如何正确掌握这个尺度呢?最简单最常用的方法是测量心率。康复锻炼心率值的计算方法是：出院时先在医生的监测下作一次低水平的运动试验,或登1～2层楼,测出最大耐受量的心率值(称峰值心率)。康复锻炼心率值＝(峰值心率－休息心率)×60％～70％＋休息心率。比如,峰
In the past, the mortality rate of hospitalized patients with acute myocardial infarction was as high as 30% -50%, and only one-third of those surviving were able to resume their previous jobs. Due to advances in medical technology, the mortality rate of myocardial infarction has dropped to 10% to 15%. If convalescent periods are accompanied by proper exercise, not only will hospitalization be shortened, more than 60% of patients will be able to resume their work. Rehabilitation exercise in patients with myocardial infarction is different from normal physical exercise, it is necessary to make the heart by a certain exercise, but also can not afford it overburdened. How to correctly grasp the scale? The easiest and most commonly used method is to measure heart rate. The heart rate of rehabilitation exercise is calculated as follows: first discharge at the doctor under the supervision of a low-level exercise test, or board 1 to 2 floors, measured the maximum tolerated heart rate (called peak heart rate). Rehabilitation exercise heart rate = (peak heart rate - resting heart rate) × 60% ~ 70% + resting heart rate. For example, the peak