S. Babaeizadeh, S.H. Zhou, X. Liu, W.Y. Hu, D. Feild, E. Helfenbein, R. Gregg, J. Lindauer
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引用次数: 8
Abstract
In this paper, we introduce a new index based on the frequency-domain analysis of heart rate variability, or more precisely, the power spectrum of the instant heart rate signal. This index, called VHFI, is defined as the very high frequency component of the power spectrum normalized to represent its relative value in proportion to the total power minus the very low frequency component. We tested VHFI on patients with known reduced left ventricular function and found that this index has the potential to be a useful tool for quick evaluation of left ventricular function.
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