2000, Volume 3, Number 1, pp.93--98
A method is proposed to analyze the heartbeat waveform that can yield a
reliable characterization of the structure of the pulses. The measure
suggested is index that is related to another measure found effective in
describing chaotic behaviors in a wide variety of physical systems. When
applied to the ECG data that include ventricular fibrillation, the index
is shown to change drastically within a few pulses. Wavelet analysis is
used to exhibit different scaling behaviors in different phases.
Sensitivity to the pulse shape makes this method an effective tool to
diagnose heartbeat irregularities.
Key words: wavelet analysis, heartbeat waveform.
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