| Literature DB >> 17946572 |
G Q Wu1, L L Shen, D K Tang, D A Zheng, C S Poon.
Abstract
Circadian rhythms of heart rate variability have been widely studied in recent years. However, most previous reports described such rhythms in terms of normalized units of the low- and high-frequency (LF and HF) spectral components. In this study, we analyzed circadian rhythms of spectral components in absolute units and found unexpected results in normal subjects as well as coronary heart disease (CHD) and congestive heart failure (CHF) patient groups. The results indicate that the notion of sympathovagal balance needs to be re-evaluated.Entities:
Mesh：
Year: 2006 PMID： 17946572 DOI： 10.1109/IEMBS.2006.260595
Source DB: PubMed Journal: Conf Proc IEEE Eng Med Biol Soc ISSN： 1557-170X