Continuous and minimally invasive cardiac output monitoring by long time interval analysis of a radial arterial pressure waveform: assessment using a.

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Presentation transcript:

Continuous and minimally invasive cardiac output monitoring by long time interval analysis of a radial arterial pressure waveform: assessment using a large, public intensive care unit patient database G. Zhang, R. Mukkamala British Journal of Anaesthesia Volume 109, Issue 3, Pages 339-344 (September 2012) DOI: 10.1093/bja/aes099 Copyright © 2012 The Author(s) Terms and Conditions

Fig 1 Accuracy of the CO estimation of the investigational techniques (on log scale) as a function of the magnitude of the reference CO change. The y-axis values at Z on the x-axis indicate the calibrated CO squared-errors [median (quartiles)] of each technique when the magnitude of the thermodilution CO change relative to the mean thermodilution CO in the patient exceeded Z%, while the P-values reveal the levels of statistical significance of the median squared-error difference between the pair of techniques with the lowest median squared-errors. MAP, mean arterial pressure; PP, pulse pressure; HR, heart rate; SP, systolic pressure; DP, diastolic pressure; LTIA, long time interval analysis. Note that the squared-errors of the LTIA/(SP+DP) technique (Table 2) were similar to those of the PP×HR/(SP+DP) technique for the magnitude of a minimum thermodilution CO change of 10% and generally larger than those of the un-normalized LTIA technique for greater changes. British Journal of Anaesthesia 2012 109, 339-344DOI: (10.1093/bja/aes099) Copyright © 2012 The Author(s) Terms and Conditions