急性心肌梗塞后存活患者心率变异性的自然演变

Spontaneous changes of heart rate variability in survivals after acute myocardial infarction

目的:对23例经临床确诊为急性心肌梗塞(AMI)的存活患者进行前瞻性的系列研究,以了解 AMI 后心率变异性(HRV)的自然演变规律。方法:所有患者均于 AMI 后第1天、第3天、第7天、半个月、3个月进行24小时动态心电图检查,部分患者于6个月、12个月重复24小时动态心电图检查,进行 HRV 分析。结果:AMI 后第1天、第3天、第7天的 HRV 值明显低于半个月的,但第1天、第3天、第7天之间 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,HRV 各项指标虽有改善,但无统计学意义。结论:AMI 后的存活患者随病情恢复,时间推移,HRV 可逐步改善,在 AMI 早期恢复明显。

Objective:In order to assess spontaneous changes in heart rate variability(HRV),23 pa- tients with acute myocardial infaretion(AMI)were studied.Methods:Time domain analysis of HRV was performed during the initial 24 hours after onset of severe symptoms and repeated at 3rd day,7th day, 2nd week,3rd month and 12 th month after AMI.Results:Reduction in HRV occurred within the first day in patients with AMI.The values of HRV increased significantly during the first three months af- ter AMI.Compared with the values during the first three months,HRV revealed slightly improvement thereafter,but the difference was not significant statistically.Conclution:Abnormalities of HRV after AMI can improve over time.