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目的 对９５ 例急性心肌梗塞（ＡＭＩ）患者急诊经皮冠状动脉腔内成形术（ＰＴＣＡ）后３０ 分钟体表心电图ＳＴ 段改变进行分析，探讨此时ＳＴ 段改变与ＰＴＣＡ 效果、心肌损害程度及心功能预后的关系。方法 根据ＳＴ 段改变分三组。组Ⅰ：ＳＴ 段明显下降（≥５０％ ）组５５ 例，组Ⅱ：ＳＴ 段下降（＜ ５０％ ）组３２ 例，组Ⅲ：ＳＴ 段无变化或抬高者组８ 例。测定术后肌酸激酶（ＣＫ）的变化，同时测定术前及术后心功能。结果 组Ⅰ与组Ⅱ为ＰＴＣＡ 成功者，术后组ⅡＣＫ 明显高于组Ⅰ。术后４～６ 周组Ⅱ射血分数（ＥＦ％ ）明显低于组Ⅰ。结论 急性心肌梗塞患者ＰＴＣＡ 术后３０ 分钟体表心电图ＳＴ 段的改变能间接反映ＰＴ－ＣＡ 疗效。较准确早期了解心肌细胞灌注情况并判定预后
Objective To investigate the changes of ST segment in body surface electrocardiogram after acute percutaneous transluminal coronary angioplasty (PTCA) in 95 patients with acute myocardial infarction (AMI) and to investigate the effect of ST segment changes and PTCA, myocardial damage and heart Relationship between function and prognosis. Methods According to ST segment changes in three groups. Group Ⅰ: 55 cases were significantly decreased in ST segment (≥50%), Group Ⅱ: 32 cases in ST segment decreased (<50%), 8 cases in group Ⅲ: No change in ST segment or elevated group. The changes of postoperative creatine kinase (CK) were measured and the preoperative and postoperative cardiac function was measured. Results Group Ⅰ and Ⅱ were successful in PTCA. The postoperative Ⅱ CK was significantly higher than that in group Ⅰ. The ejection fraction (EF%) in group 4 ~ 6 weeks after operation was significantly lower than that in group Ⅰ. Conclusions The changes of ST segment in body surface electrocardiogram 30 minutes after PTCA can indirectly reflect the effect of PT-CA in patients with acute myocardial infarction. Accurate and early understanding of myocardial perfusion and determine the prognosis