急性脑梗死患者44例心率变异性分析

目的:探讨脑梗死患者的心率变异性,从而了解脑梗死对心脏自主神经功能的影响。方法:采用HRV时域及频域分析方法对44例脑梗死患者和60例正常人的心率变异作对比分析。结果:脑梗死患者的SDNN、SDSD、RMSSD、PNN5 0三角指数及HF明显低于正常组,有显著性差异( P<0 .0 1 )。结论:脑梗死患者心率变异明显减低,心脏自主神经受损,HRV时域及频域分析可作为无创伤性评价脑梗死患者心脏自主神经功能的可靠方法

Analysis of heart rate variability in 44 patients with brain infarction

Objective:To appraise the effect of HRV on the cardiac damage and the prognosis of the patients with brain infarct. Methods:24-hour electrocardiogram had been performed, the time domain analysis was made in 44brain infarct patients and 60 normal sujects. Results: The standard deviation of all normal RR intervals (SDNN), the standard deviation of successive difference (SDSD), the root mean square successive difference (RMSSD), percentage of differences between normal R-R intervals that exceed 50 ms (PNN50 and and triangular index and HF(high frequency power ) were markedly reduced in brain infarct patients compared to control subjects ( P <0.01). Conclusions: The patients with brain infarct disease experience autonomic dysfunctions that may be responsible for sudden cardiac death. The time domain analysis of HRV is a non-invasive and quantitative method in evaluating autonomic neuropathy