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目的 对 13例经临床诊断急性心肌梗死 (AMI)者进行前瞻性的系列研究 ,了解AMI后心率变异性(HRV)的自然演变规律。方法 均于AMI后第 1、3、7、15、90d作 2 4h动态心电图 (DCG)检查 ,部分患者于 6、12个月重复 2 4hDCG检查 ,作HRV分析。结果 AMI后第 1、3、7d时HRV值明显低于 15d者 ,但第 1、3、7d之间HRV值无明显差异。 3个月的HRV值较半个月时明显改善 ,3个月以后 ,各项指标虽有改善 ,但无统计学意义。结论 AMI患者随病情恢复、时间推移 ,HRV可逐步改善 ,在AMI早期恢复明显
Objective To investigate the natural evolution of heart rate variability (HRV) in 13 patients with acute myocardial infarction (AMI) after prospective AMI. Methods All patients underwent 24-hour ambulatory electrocardiogram (DCG) examinations on the 1st, 3rd, 7th, 15th and 90th days after AMI. Some patients were examined by 24-hour DCGG at 6 and 12 months for HRV analysis. Results The HRV of the 1st, 3rd, 7th day after AMI was significantly lower than that of the 15th day, but there was no significant difference in HRV between the 1st, 3rd, 7th day. The HRV of three months was significantly improved compared with that of half a month. After three months, all the indexes improved, but not statistically significant. Conclusion The AMI patients recover gradually with the progression of disease, the HRV can be gradually improved, and the recovery is obvious in the early stage of AMI