Abstract：Objective To investigate the changes and significance of heart rate variability(HRV) and deceleration capacity of rate(DC) in children with viral myocarditis. Methods Fifty children with viral myocarditis were selected as the experimental group, and 50 healthy children who had undergone health checkups in our hospital during the same period were selected as the control group. The 24 h ambulatory electrocardiogram test was performed in the two groups of children. The levels of DC and HRV indicators were recorded and the correlation between DC and HRV indicators was analyzed. Results DC, lowfrequency power, highfrequency power, standard deviation of RR interval mean(SDANN), overall standard deviation of RR interval(SDNN), and root mean square difference of adjacent RR intervals(RMSSD) of the test group are lower than that of the control group, and the difference is statistically significant(P<0.05). The bivariate Pearson correlation analysis test confirmed that DC was positively correlated with low frequency power, high frequency power, SDANN, SDNN, and RMSD(r values were 0.632, 0.703, 0.781, 0.608 and 0.772, P<0.05). Conclusions Children with viral myocarditis are often associated with impaired vagus nerve function, and HRV indicators are positively correlated with DC, suggesting that the use of DC for judging the severity of viral myocarditis in children and its treatment guidance have certain clinical significance.
陈惠红,刘东亮,潘月. 病毒性心肌炎患儿心率变异性与心率减速力的相关性分析[J]. 实用心电学杂志, 2020, 29(1): 16-18.
Chen Huihong,Liu Dongliang, Pan Yue. Correlation between heart rate variability and deceleration capacity of rate in children with viral myocarditis. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2020, 29(1): 16-18.
