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对急性心肌梗塞（ＡＭＩ）病人溶栓前及溶栓后２ｈ心电图（ＥＣＧ）ＳＴ段进行了分析，根据溶栓前后ＳＴ段下降的不同程度分组，观察了ＳＴ段下降的百分数≥７０％组，＜７０～≥３０％组及＜３０％组的心肌酶（ＣＰＫ—ＭＢ）释放规律及梗塞危险区的变化规律。结果表明：在ＳＴ段下降＜３０％组，其ＣＰＫ—ＭＢ峰值时间明显长于其它两组，而ＣＰＫ—ＭＢ最大含量也明显高于ＳＴ段≥７０％组；溶栓治疗前后梗塞危险区的程度无改善，而且该组死亡率高。结论：心电图早期ＳＴ段变化可作为ＡＭＩ病人溶栓治疗预后的重要指标。
The ST segment of electrocardiogram (ECG) in patients with acute myocardial infarction (AMI) before thrombolysis and 2h after thrombolysis was analyzed. According to the different degree of ST segment decline before and after thrombolysis, the percentage of ST segment decline was observed in 70% The changes of myocardial enzymes (CPK-MB) release in <70% ≥30% and <30% groups and the risk of infarction were observed. The results showed that the peak time of CPK-MB in ST-segment decreased significantly <30% compared with the other two groups, but the maximum content of CPK-MB was also significantly higher than that of ST-segment≥70%. The degree of infarct risk before and after thrombolysis No improvement, and the group of high mortality. Conclusion: The changes of ST segment in early stage of electrocardiogram can be used as an important index of the prognosis of patients with AMI.