Accuracy of Cardiac Output by Nine Different Pulse Contour Algorithms in Cardiac Surgery Patients: A Comparison with Transpulmonary Thermodilution

Table 4

Correlation and Bland-Altman analysis showing bias, standard deviation from bias, 95% limits of agreement, and percentage error during passive leg raising for nine different pulse contour algorithms compared with transpulmonary thermodilution.

PLR
	X1	X2	X3	X4	X5	X6	X7	X8	X9
Mean (L/min)	2.70	2.72	2.77	2.87	2.83	2.90	2.79	2.83	2.83
Bias (L/min)	−0.54	−0.52	−0.47	−0.37	−0.40	−0.34	−0.45	−0.41	−0.40
SD of bias (L/min)	1.08	1.13	1.15	0.89	1.17	1.20	1.13	1.15	1.11
Correlation ()	0.18	0.15	0.17	0.36	0.17	0.18	0.17	0.17	0.20
95% limits of agreement (L/min)	−2.66–+1.59	−2.75–+1.72	−2.72–+1.77	−2.12–+1.38	−2.69–+1.89	−2.70–+2.02	−2.67–+1.76	−2.66–+1.84	−2.58–+1.75
Percentage error (%)	72	75	77	58	77	78	74	75	73

PLR, passive leg raising; , cardiac output by nine different pulse contour algorithms.