不同程度慢性心力衰竭患者心律失常及其心率变异性的临床研究

目的探讨不同程度慢性心力衰竭(CHF)患者心律失常及其心率变异性(HRV)的变化和临床意义。方法采用24h动态心电图监测67例不同程度慢性心力衰竭患者(CHF组)和30例健康者(对照组),对心律失常及HRV的时域和频域指标进行对比分析。结果 CHF组各级心功能均以室性期前收缩发生最高,时域和频域指标均低于对照组(P<0.05),随着心功能下降,室性期前收缩发生率越高,HRV值越低,自主神经功能受损越明显,与心功能损害程度一致。结论不同程度CHF患者以室性期前收缩为主,HRV各项指标能反映患者自主神经功能状态,联合检测有助于判断CHF患者病情严重程度、预后和早期干预治疗。

Different Degrees of Chronic Heart Failure and Arrhythmia in Patients with Comparative Analysis of Heart Rate Variability

Objective Of varying degrees of chronic heart failure(CHF)in patients with cardiac arrhythmias and heart rate variability(HRV)changes and clinical significance.Methods Use 24h Holter monitoring 67 cases of patients with varying degrees of chronic heart failure(CHF group)and 30 healthy people(control group),the arrhythmia and HRV in time domain and frequency domain were analyzed.Results CHF group heart function at all levels were the highest occurrence of premature ventricular contractions,time domain and frequency domain indices were lower than the control group(P<0.05),and with the higher occurrence of premature ventricular contractions decreased heart function,HRV values lower,the more obvious autonomic dysfunction,and cardiac function consistent with the extent of damage.Conclusion CHF patients with varying degrees of premature ventricular contractions main,HRV indicators to reflect the functional status of patients with autonomic nervous system,joint detection can improve the assessment by the severity of CHF,the prognosis and early intervention.