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Position of four key physiological points of the radial pulse wave and ARE calculation in a full cardiac cycle
[36]: (a) Onset: aortic valve open; (b) P1: ventricular contraction; (c) P2: reflected wave; (d) P3: aortic valve closure;
(e) P4: diastolic wave. t represents time, h represents the amplitude of each key physiological point, and a represents the amplitude of the single-reference pulse signals at each sampling point.
