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. Author manuscript; available in PMC: 2011 Jun 4.
Published in final edited form as: Crit Care Med. 2009 Jan;37(1):72–80. doi: 10.1097/CCM.0b013e3181930174

Figure 1.

Figure 1

Five examples of arterial blood pressure waveforms and their key features as identified by our automated algorithms. The horizontal axis is sample number, with 125 samples = one second. Onset point of each beat is indicated by an asterisk “*”; end of systole, estimated by 0.3 · √beat_period, is indicated by “X”; end of systole, estimated by the ‘lowest nonnegative slope’ method, is indicated by a “0”.