Power spectral analysis of heart rate variability in a horse with atrial fibrillation

被引:13
作者
Kuwahara, M
Hiraga, A
Nishimura, T
Tsubone, H
Sugano, S
机构
[1] Univ Tokyo, Grad Sch Agr & Life Sci, Dept Comparat Pathophysiol, Bunkyo Ku, Tokyo 113, Japan
[2] Japan Racing Assoc, Equine Res Inst, Utsunomiya, Tochigi 320, Japan
[3] Hidaka Nosai, Sakaimachi Higashi, Hokkaido 057, Japan
关键词
atrial fibrillation; equine; heart rate variability;
D O I
10.1292/jvms.60.111
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
This study has demonstrated the power spectral analysis of heart rate variability in a horse with atrial fibrillation. A large peak in the high frequency (HF) area of the power spectrum appeared in the horse. Hourly heart rate, the low frequency (LF) power, the HF power, and LF/HF ratio were almost constant during the recording period. The values of HF and LF power in the horse with atrial fibrillation were much larger than those in normal horses. The normalized unit of HF (HF n.u.) was much larger than that of LF (LF n.u.). Furthermore, the LF/HF ratio was very small in the horse. These results suggest that the ventricular rhythm has a respiratory related periodicity in the horse with atrial fibrillation and the predominant parasympathetic activity may modulate the intrinsic behavior of the atrioventricular node during atrial fibrillation.
引用
收藏
页码:111 / 114
页数:4
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