中国全科医学 ›› 2019, Vol. 22 ›› Issue (36): 4429-4434.DOI: 10.12114/j.issn.1007-9572.2019.00.599

• 专题研究 • 上一篇    下一篇

血管迷走性晕厥患儿无症状期心率减速力与连续心率减速力变化情况及其临床价值研究

闫菲,吴蕊*,韩雅琪,王文涛,王瑶函,张新雨   

  1. 450000河南省郑州市,河南省人民医院 华中阜外医院 郑州大学华中阜外医院心肺功能科
    *通信作者:吴蕊,主治医师;E-mail:yf.shl0109@163.com
  • 出版日期:2019-12-20 发布日期:2019-12-20

Value of Changes in Heart Rate Deceleration Capacity and Deceleration Runs in Children with Asymptomatic Vasovagal Syncope 

YAN Fei,WU Rui*,HAN Yaqi,WANG Wentao,WANG Yaohan,ZHANG Xinyu   

  1. Department of Cardiopulmomary Function Examination,Henan Provincial People's Hospital/Fuwai Hospital Central China Cardiovascular Hospital/Fuwai Hospital Central China Cardiovascular Hospital of Zhengzhou University,Zhengzhou 450000,China
    *Corresponding author:WU Rui,Attending physician;E-mail:yf.shl0109@163.com
  • Published:2019-12-20 Online:2019-12-20

摘要: 背景 血管迷走性晕厥(VVS)是儿童不明原因晕厥的常见病因,其发生多与自主神经调节失衡有关。心率减速力(DC)与连续心率减速力(DRs)是近年来发现的一种能定量评估心脏自主神经张力的新的心电指标,但是其在VVS患儿中的变化及应用,目前鲜见相关报道。目的 探讨VVS患儿无症状期DC与DRs变化情况,并分析其临床价值。方法 选取2016年12月—2017年12月于河南省人民医院确诊的符合研究标准的VVS患儿60例作为研究组,同期选取于河南省人民医院体检的健康儿童42例作为对照组,性别、年龄与研究组相匹配。研究对象均进行24 h动态心电图检查,记录其心率变异性(HRV)各项指标〔窦性心律R-R间期总体标准差(SDNN)、窦性心律R-R间期平均值的标准差(SDANN)、相邻正常窦性心律R-R间期之差的均方根值(RMSSD)、低频功率(LF)、高频功率(HF)〕、DC值、DRs值,比较两组各指标间的差异,并分析其相关性。结果 研究组SDNN、SDANN、LF小于对照组,RMSSD、HF大于对照组(P<0.05)。研究组DC值、连续5个心动周期中后4个心动周期相继发生心率减速现象(DR4)、连续9个心动周期中后8个心动周期相继发生心率减速现象(DR8)高于对照组(P<0.05);两组连续 3 个心动周期中后2个心动周期相继发生心率减速现象(DR2)比较,差异无统计学意义(P>0.05)。Pearson相关分析结果显示,VVS患儿DC值与SDNN、SDANN、RMSSD、HF呈正相关(r值分别为0.90、0.84、0.92、0.86),与LF(r=-0.85)呈负相关(P<0.05)。结论 VVS患儿DC值、DRs值明显升高,表明存在自主神经功能异常;且DC值、DRs值可以从不同侧面定量评估迷走神经张力高低。

关键词: 晕厥, 血管迷走神经性;心率减速力;心率减速力;心率变异性;儿童

Abstract: Background Vasovagal syncope (VVS) is a common cause of unexplained syncope in children,whose occurrence is mainly associated with the imbalance of autonomic nerve system.Heart rate deceleration capacity(DC) and deceleration runs (DRs) are two new ECG indicators recently found for quantitative evaluation of cardiac autonomic responses to stress.But the application and changes of them in VVS children are rarely reported.Objective To evaluate the clinical value of the changes in heart rate DC and DRs in children with asymptomatic VVS.Methods Participants meeting the study criteria were recruited from Henan Provincial People's Hospital during December 2016 to December 2017,including 60 with VVS(study group),and sex-and age-matched 42 healthy physical examinees(control group).All of them underwent 24-hour ambulatory ECG.Parameters of heart rate variability (HRV) ( SDNN,SDANN,RMSSD,LF and HF),DC and DRs were rerecorded,and were compared between groups.Pearson correlation analysis was conducted to examine the correlations of these parameters.Results The study group had lower mean values of SDNN,SDANN,and LF,and higher mean values of RMSSD and HF than the control group(P<0.05).The study group showed higher mean values of DC,DR4 and DR8(P<0.05),but similar mean value of DR2(P>0.05) compared with the control group.Pearson correlation analysis showed that the value of DC was positively correlated with SDNN,SDANN,RMSSD and HF (r values were 0.90,0.84,0.92,0.86,respectively),and negatively correlated with LF (r=-0.85) (P<0.05).Conclusion The values of DC and DRs in children with VVS were obviously increased,indicating that there were autonomic nervous system disorders.DC and DRs can quantitatively evaluate the vasovagal response to stress from different aspects.

Key words: Syncope, vasovagal;Vasovagal syncope;Deceleration capacity of rate;Heart rate deceleration runs;Heart rate variability;Child