心率变异性与每搏输出量变异性的比较。

Comparison of heart rate variability and stroke volume variability.

作者信息

Liu Hongjian, Yambe Tomoyuki, Sasada Hiroshi, Nanka Shunsuke, Tanaka Akira, Nagatomi Ryoichi, Nitta Shin-Ichi

机构信息

Department of Medical Engineering and Cardiology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.

出版信息

Auton Neurosci. 2004 Nov 30;116(1-2):69-75. doi: 10.1016/j.autneu.2004.09.003.

DOI:10.1016/j.autneu.2004.09.003

PMID:15556840

Abstract

In order to compare the heart rate variability (HRV) and stroke volume variability (SVV), supine electrocardiographic (ECG) and the time series data of left ventricular (LV) volume recordings were taken in 12 healthy adult male volunteers. The low frequency (LF) and high frequency (HF) peaks of HRV and SVV were evaluated quantitatively by power spectral analysis. The fractal dimension (FD) of the time series data was analyzed by the box-counting method. A LF peak around 0.1 Hz and a HF peak around 0.3 Hz were as clearly observed in the SVV spectrum as in the HRV spectrum. The LF/HF ratio in SVV was significantly lower than that in HRV, while the FD was significantly higher in SVV than in HRV. No significant correlation of HF, LF or FD was observed between HRV and SVV. Our results indicate that SVV provides different information about the activity of the autonomic nervous system than HRV.

摘要

为了比较心率变异性（HRV）和每搏输出量变异性（SVV），对12名健康成年男性志愿者进行了仰卧位心电图（ECG）检查以及左心室（LV）容积记录的时间序列数据采集。通过功率谱分析对HRV和SVV的低频（LF）和高频（HF）峰值进行了定量评估。采用盒计数法分析了时间序列数据的分形维数（FD）。在SVV频谱中与HRV频谱中一样清晰地观察到约0.1 Hz的LF峰值和约0.3 Hz的HF峰值。SVV中的LF/HF比值显著低于HRV中的比值，而SVV中的FD显著高于HRV中的FD。未观察到HRV与SVV之间的HF、LF或FD存在显著相关性。我们的结果表明，与HRV相比，SVV提供了关于自主神经系统活动的不同信息。