Xianghua Qi

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In this paper, approximate entropy (ApEn) is applied to study the variability of pulse waveform for assessing coronary arteriosclerosis status. Having analyzed the wrist pulse waveforms taken from both normal subjects and the patients suffering from coronary arteriosclerosis (CA) disorders, we find that pulse morphology variability (PMV) is more efficient(More)
OBJECTIVE To explore the electroencephalogram (EEG) characteristics in patients with chronic fatigue syndrome (CFS) using brain electrical activity mapping (BEAM) and EEG nonlinear dynamical analysis. METHODS Forty-seven outpatients were selected over a 3-month period and divided into an observation group (24 outpatients) and a control group (23(More)
BACKGROUND The usefulness of heart rate variability (HRV) in the clinical research has been verified in numerous studies. However, it is controversy that using pulse rate variability (PRV) as a surrogate of HRV in different clinical applications. OBJECTIVE We aimed to investigate whether PRV extracted from finger pulse photoplethysmography (Pleth) signal(More)
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