TY - JOUR
T1 - Time-frequency distribution of heart rate variability below 0.05 Hz by Wigner-Ville spectral analysis in congestive heart failure patients
AU - Chan, Hsiao Lung
AU - Lin, Jiunn Lee
AU - Du, Chao Chen
AU - Wu, Chien Ping
PY - 1997/9/1
Y1 - 1997/9/1
N2 - The Wigner-Ville spectral analysis was utilized to demonstrate a high- resolution time-frequency distribution of heart rate variability below 0.05 Hz. There are different time-frequency characteristics between the normal subject and the patient with severe congestive heart failure. The former consists of multiple and broad-band spectral peaks, while the latter presents unique spectral peaks. Based on Bayes theory, a classifier for the unique spectral peaks was developed. After the beneficial improvement with low-dose beta-blockers, the unique spectral peaks had disappeared or the time of occurrence was reduced in most patients.
AB - The Wigner-Ville spectral analysis was utilized to demonstrate a high- resolution time-frequency distribution of heart rate variability below 0.05 Hz. There are different time-frequency characteristics between the normal subject and the patient with severe congestive heart failure. The former consists of multiple and broad-band spectral peaks, while the latter presents unique spectral peaks. Based on Bayes theory, a classifier for the unique spectral peaks was developed. After the beneficial improvement with low-dose beta-blockers, the unique spectral peaks had disappeared or the time of occurrence was reduced in most patients.
KW - Congestive heart failure
KW - Heart rate variability
KW - Time-frequency analysis
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U2 - 10.1016/S1350-4533(97)00025-8
DO - 10.1016/S1350-4533(97)00025-8
M3 - Article
C2 - 9394906
AN - SCOPUS:0031238864
VL - 19
SP - 581
EP - 587
JO - Medical Engineering and Physics
JF - Medical Engineering and Physics
SN - 1350-4533
IS - 6
ER -