晕船病的心率变异性分析

目的研究晕船病者的心率变异性（HRV）,分析两者间的关系。方法 88名健康学员根据航海中是否出现晕船反应分为晕船病组（A组）46例和不晕船组（B组）42例,分别采集其陆上安静状态下和海上航行中的短程HRV,分析其时域、频域指标,判断自主神经功能状态。结果①在陆上安静状态下,SDNN、PNN50、HRVI、VLF、LF、HF、TP指标A组高于B组,MRR、rMSSD在二组间无差异,而LF/HF A组低于B组。②海上航行中,A组MRR、SDNN、rMSSD、PNN50、HRVI、LF、HF、TP高于B组。VLF二组间无差异。结论晕船病者固有的自主神经张力较高,在发生晕船病时自主神经张力明显增高,特别是以迷走神经张力为主。HRV检测可以作为预测晕船病的一个敏感指标。

Heart rate Variabilty study in seasickness

Objective To explore the correlation between heart rate variability and seasickness.Methods According to their seasickness response on voyage,88 subjects enrolled in this study were divided into two groups： 46 in seasickness group and 42 in non-sickness group.Electrocardiographic data were collected on the land quietly and on voyage respectively.Short-term heart rate variability including time-domain,frequency-domain was used to estimate the function of autonomic nerve system.Results On the land test,the values of SDNN,PNN50,HRVI,VLF,LF,HF and TP in seasickness group were higher than those in non-sickness group.MRR and rMSSD had no difference between the two groups.LF/HF ratio desreased in seasickness group.On the voyage tests,the indices of MRR,SDNN,rMSSD,PNN50,HRVI,LF,HF and TP were higher in seasickness group than non-sickness group.VLF had no difference between the two groups.Conclusion The intrinsic activity of autonomic nerve are higher in sea-sickness subjects,especially while seasickness attacks.Measurement of heart rate variability might be an important indicator for the prediction of susceptibility to seasickness.