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为观察缺血预适应对心肌缺血的保护作用,将AMI106例分为缺血预适应组(A组)77例和无缺血预适应组(B组)29例。根据血清肌酸激酶及同工酶、丙酮酸激酶活性-时间变化曲线定量计算其心肌梗塞范围,A组分别为34.2±22.5CK-MB-g,35.2±24.4CK-g,32.8±22.7PK-g;B组分别为44.9±21.7CK-MB-g,46.6±23.6CK-g,43.6±20.7PK-g,A组心