260例急性心肌梗死的心率变异性分析

Analysis of heart rate variability in 260 patients with acute myocardial infarction

目的:观察260例急性心肌梗死的心率变异性。方法:选择进行AMI治疗的患者260例作为观察组,选择同期、同年龄段行健康体检者100例作为对照组,所有人员均进行24 h心电监测,进行心率变异性分析。结果:观察组患者SDNN、SDANN、r MSSD、PNN50、TP、LF、HF均明显低于对照组,LF/HF明显高于对照组;260例AMI患者根据梗死面积分为广泛梗死组87例和局限梗死组173例,经过心率变异性分析发现广泛梗死组患者在极早期和稳定期SDNN、SDANN、PNN50、r MSSD、LF、HF均明显低于局限梗死组。结论:心率变异性对于心肌梗死的诊断和梗死面积的判定具有重要的临床诊断价值。

Objective To observe the heart rate variability in 260 patients with acute myocardial infarction. Method 260 ca-ses of AMI were selected as observation group, 100 cases of healthy subjects were selected as control group in the same period and the same age group, All personnel were 24 hours ECG monitoring and analyzed for heart rate variability. Results The SDNN, SDANN,rMSSD,PNN50,TP,LF,HF in the observation group were significantly lower than those in the control group,LF/HF was significantly higher than that in the control group;260 patients with AMI were divided into two groups according to the infarction area ： the extensive infarction group （ n = 87） and the local infarction group （n = 173） ,The analysis of heart rate variability showed that SDNN, SDANN, PNN50, rMSSD, LF, HF were significantly lower in patients with extensive infarction in the early and stable phase than in the patients with localized infarction. Conclusion Heart rate variability has important clinical value in the di-agnosis of myocardial infarction and the determination of infarct size.