心率变异时域及频域分析对儿童病毒性心肌炎的临床价值

The clinical value to the children with viral myocarditis by analyzing the time and frequent domain of heart rate variability

目的监测病毒性心肌炎患儿的心率变异时域、频域指标,评价其对儿童病毒性心肌炎的临床价值。方法采用计算机心电监测系统,分别对42例病毒性心肌炎患儿和42例健康儿童进行HRV时域、频域指标检测,对两组间检测结果进行比较分析。结果病毒性心肌炎患儿心率变异时域指标、心率总体标准差(SDNN)、心率差值均方的平均根(RMSSD)均降低,频域指标低频成分(LF)、高频成分(HF)降低,而LF/HF增高。与对照组均有显著性差异(P<0.05)。结论病毒性心肌炎患儿自主神经功能受损,表现以迷走神经活性降低为主,HRV指标可为儿童病毒性心肌炎的早期诊断提供参考,提示重新调整自主神经平衡对病毒性心肌炎的防治有不可忽视的价值。

Objective To investigate the clinical value of children with viral myocarditis analyzing the time and frequent domain of heart rate variability.Methods The time and frequent domain of heart rate variability were analyzed in the 42 viral myocarditis and 42 healthy children controls by ECG monitoring system.Results There was significance different of time and frequency domain indexes in the viral myocarditis and the control group（P0.05）.The SDNN and RMSSD indexes of the time domain were less significant in the viral myocarditis.The LF and HF of the frequency domain indexes were depressed,whereas,there was a significant increase（P0.05） in the LF/HF indexes.Conclusion Children with viral myocarditis is had autonomic imbalance,especially vagal imbalance.The indexes of HRV is correlative the diagnose of the inchoate viral myocarditis.It is non-neglected value of adjusting autonomic balance in treating viral myocarditis disease.