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25例心肌炎患儿,男12例,女13例,年龄7.2±2.9岁(2～12岁)。发病后一周(急性期)和发病后三月后(恢复期)接受心率变异性(HRV)检查。结果发现:急性期 HRV 时域分析各项指标均显著性小于恢复期和正常对照组,以 SD=50ms 为界,急性期21例 SD<50ms,恢复期12例 SD<50ms,有显著性差异;急性期和恢复期HRV 频域分析,低频平均功率与正常对照组有显著性差异。提示心肌炎的急性期以及恢复期可能存在交感和迷走神经相互作用的失调。
25 cases of myocarditis in children, 12 males and 13 females, aged 7.2 ± 2.9 years (2 to 12 years old). One week after onset (acute phase) and three months after onset (convalescence), heart rate variability (HRV) was examined. The results showed that all indexes of HRV time-domain analysis in acute phase were significantly lower than those in recovery phase and normal control group. SD = 50ms, 21 cases of SD <50ms in acute phase and 12 cases of SD <50ms in recovery phase, with significant difference ; HRV frequency domain analysis in acute phase and convalescent phase, low frequency average power had significant difference with normal control group. Prompt myocarditis in acute and convalescent sympathetic and vagus nerve interactions may exist disorders.