神经介导性晕厥患者自主神经功能改变的相关研究

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[中图分类号] R540.41［文献标志码]A [文章编号] 2097-5716（2025）03-0358-05

DOI： 10.13308/j.issn.2097-5716.2025.03.009

[引用格式]，.神经介导性晕厥患者自主神经功能改变的相关研究［J].实用心电与临床诊疗，2025，34（3）：358-362.

Autonomic function changes in patients with neurally mediated syncope： insights from head-up tilt test

LI Jingxiu，GAO Min（ity Sciencean Technology China，Anhui Provincial ，Hefei Anhui 23OOO1，China）

[Abstract]ObjectiveTo investigate autonomic function changes in patients with neurally mediated syncope.

MethodsWecollected the clinical data patients presenting with syncope or presyncope. According to the results head-up tilt test（HUTT），they were divided into an HUTT positive（mixed type） group and an HUTT negative group，each with 53 cases.Each heart rate variability（HRV） index the two groups were comparatively analyzed before HUTTand during the testing.ResultsBefore the testing，there were no statisticall significant differences in the HRV time-domain indexes SDNN，SDANN，SDNN index，rMSSD，pNN5O，and TINN between the two groups （all P>0.05 ）； there were also no statistically significant diferences in the HRV frequency-domain indexes LF，HF and LF/HF between the two groups （all P>0.05 ）. During the process HUTT， if the during-HUTT indexes were compared between the two groups，it revealed that rMSSD value the HUTT positive （mixed type） group was significantly higher than that the HUTT negative group （ P<0.05 ）.ConclusionCompared to pre-HUTT HRV indexes，during-HUTT HRV indexes demonstrate greater clinical significance.The presence vagal overactivity immediately at the onset syncope in patients with neurally mediated syncope. [Key words]neurally mediated syncope；autonomic nervous system；heart rate variability；vagus nerve; head-up tilt test

神经介导性晕厥（neurallymediated syncope，NMS）是一种短暂的、自限性的意识丧失，在人群中有较高的患病率（ 15%～23% ），多发于年轻人和女性[]。（剩余7002字）