Figure 3
From: Validation of the pulse decomposition analysis algorithm using central arterial blood pressure
Different pressure pulse spectra of a 65-old male at two different blood pressures. (A) Arterial pressure pulses obtained from digital integration of signal displayed in (B): derivative signals of arterial pressure pulse obtained with CareTaker physiological monitor (C); second derivatives of arterial pressure pulse, obtained through differentiation of signal displayed in (B). Note the merging of P2 and P1 in the pulse envelopes (A) as well as the increase in the shoulder between data points 100 and 150 in the derivative signals (B). Significance of red arrow is explained in the text.