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山东大学学报(医学版) ›› 2013, Vol. 51 ›› Issue (3): 68-71.

• 临床医学 • 上一篇    下一篇

高血压合并室性早搏患者线性及非线性心率变异性分析

祁佳1,马玉茹2,杨永丽3,黎莉1,马骁4   

  1. 1. 山东大学齐鲁医院心内科,济南 250012; 2. 宁夏医科大学总医院心内科,银川 750004;
    3. 云南省延安医院老年病科,昆明 650051; 4. 济南军区456医院心内科,济南 250031
  • 收稿日期:2012-11-14 出版日期:2013-03-10 发布日期:2013-03-10
  • 通讯作者: 黎莉(1954- ),女,主任医师,博士生导师,主要从事心律失常的临床与基础研究。E-mail: lili-8599@163.com
  • 作者简介:祁佳(1986- ),女,硕士研究生,主要从事心律失常的研究。E-mail: cynthia-1986@163.com
  • 基金资助:

    山东省自然科学基金(Y2005C32),山东省科技攻关项目(2009GG10002034)

Analysis of linear and nonlinear heart rate variability in patients with essential hypertension and ventricular premature beats

QI Jia1, MA Yu-ru2, YANG Yong-li3, LI Li1, MA Xiao4   

  1. 1. Department of Cardiology, Qilu Hospital of Shandong University, Jinan 250012, China;
    2. Department of Cardiology, General Hospital of Ningxia Medical University,  Yinchuan 750004, China;
    3.Department of Gerontology,Yunnan Provincial Yan’an Hospital, Kunming 650051, China;
    4.  Department of Cardiology, Jinan Military 456 Hospital, Jinan 250031, China
  • Received:2012-11-14 Online:2013-03-10 Published:2013-03-10

摘要:

目的   研究高血压合并室性早搏患者线性及非线性心率变异性(HRV)指标的变化及与室性早搏数目的相关性。方法   选用24h长程及5min短程HRV指标对77例高血压合并室性早搏患者(A组)和41例正常对照者(B组)进行心率变异性分析,其中长程线性指标包括所有正常R-R间期标准差(SDNN)、每5min正常R-R间期均值的标准差(SDANN)、每5min 正常R-R间期标准差的均值(SDNN Index)、相邻正常R-R间期差值的均方根(RMSSD)、相邻正常R-R间期差值>50ms的百分比(pNN50),短程线性指标包括低频功率标化值(LFn)、高频功率标化值(HFn)、低频功率/高频功率(LF/HF),短程非线性指标包括中心边缘比(CER)、累积能量(CE)、最大李雅普诺夫指数(LEs)、心迷走指数(CVI)、心交感指数(CSI),并分析A组的HRV指标与室性早搏数目的相关性。结果   与B组相比,A组的SDNN、SDANN、SDNN Index、RMSSD 、pNN50、HFn、LEs和CVI显著降低(P<0.05),LFn、LF/HF、CER、CE和CSI显著升高(P<0.05),其中CER、LEs两项指标表现出随着室性早搏程度的加重而升高的趋势(P<0.05),CER、CE、CSI与A组的24h室性早搏数目呈正相关(P<0.05),LEs、CVI与A组的24h室性早搏数目呈负相关(P<0.05)。结论   高血压合并室性早搏患者的HRV显著下降,室性早搏数目随交感神经张力增高而增多,非线性HRV评价自主神经功能较线性HRV更为敏感。

关键词: 高血压;室性早搏;线性;非线性;心率变异性

Abstract:

Objective   To investigate the changes of linear and nonlinear heart rate variability(HRV)parameters and the correlation between HRV parameters and the number of ventricular premature beats in patients with essential hypertension and ventricular premature beats. Methods   24-hour long-term HRV parameters and 5-minute short-term HRV parameters were measured in 77 patients(group A)and 41 healthy controls(group B). Long-term linear parameters included standard deviation of normal-to-normal RR intervals(SDNN), standard deviation of all mean 5-minute RR intervals(SDANN), mean of standard deviation of all 5-minute RR intervals(SDNN Index), root mean square successive difference between adjacent RR intervals(RMSSD)and percentage of NN50 in the total number of RR intervals(pNN50). Short-term linear parameters included normalized low frequency(LFn), normalized high frequency(HFn)and low frequency to high frequency(LF/HF). Short-term nonlinear parameters included center-edge ratio(CER), cumulative energy(CE), Lyapunov exponents(LEs), cardiac vagus index(CVI)and cardiac sympathetic index(CSI). The correlation between HRV parameters and the number of 24-hour ventricular premature beats in group A was analysed. Results   Compared with group B, SDNN, SDANN, SDNN Index, RMSSD, pNN50, HFn, LEs and CVI in group A were significantly lower(P<0.05), and LFn, LF/HF, CER, CE and CSI in group A were significantly higher(P<0.05), while both CER and LEs had increasing trends with the worsening of ventricular premature beats(P<0.05). The number of 24-hour ventricular premature beats were positively correlated with CER, CE and CSI(P<0.05), while negatively correlated with LEs and CVI (P<0.05). Conclusion   In patients with essential hypertension and ventricular premature beats, HRV descends significantly and the number of ventricular premature beats increases along with the increased sympathetic tone. Nonlinear HRV parameters are more sensitive in assessing the function of automatic nerve.

Key words: Essential hypertension; Ventricular premature beat; Linear; Nonlinear; Heart rate variability

中图分类号: 

  • R331.3
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