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目的探讨急性心肌梗死(AM I)患者1周内及1月后心率变异性(HRV)及QT离散度(QTd)的变化。方法选择30例AM I患者1周内及1月后做HRV及QTd分析,并与健康对照组(30例)进行对比观察。结果AM I1周内与1月后HRV显著降低,与健康对照组比较差异有统计学意义(P<0.01),AM I1周内QTd明显长于1月后及健康对照组,对比差异有统计学意义(P<0.01)。结论HRV及QTd检测可作为判断AM I预后的无创伤性检测手段,AM I患者1月后仍是发生心源性猝死的高危人群。
Objective To investigate the changes of heart rate variability (HRV) and QT dispersion (QTd) in patients with acute myocardial infarction (AMI) within one week and one month. Methods HRV and QTd analysis were performed in 30 patients with AMI within 1 week and 1 month, and compared with the healthy control group (30 patients). Results The HRV of AMI in 1 week and 1 month was significantly lower than that in healthy control group (P <0.01). The QTd in AM I1 week was significantly longer than that in 1 month and healthy control group, the difference was statistically significant (P <0.01). Conclusion HRV and QTd detection can be used as a non-invasive method to judge the prognosis of AMI. AM I patients are still at high risk of sudden cardiac death after one month.