Reliability of continuous cardiac output measurement during intra-abdominal hypertension relies on repeated calibrations: an experimental animal study

Table 2 Bland–Altman analysis and linear regression analysis of changes in cardiac output

	Bias (%)	Precision (%)	95% limits of agreement (%)	r ²
ΔCO_TCP and ΔPulseCO	12	19	-26 to 50	0.38
ΔCO_TCP and ΔPCCO_pre	14	18	-22 to 51	0.32
ΔCO_TCP and ΔPCCO_recal	-1	5	-10 to 9	0.94
ΔCO_TCP and ΔCCO_PAC	2	14	-26 to 30	0.47

Bias (mean difference), precision (standard deviation of bias), 95% limits of agreement, and correlation coefficient (r²) between changes (Δ) of CO measured by ΔPulseCO, ΔPCCO_pre, ΔPCCO_recal and ΔCCO_PAC compared with ΔCO_TCP. CO_TCP, bolus transcardiopulmonary thermodilution cardiac output; PulseCO, continuous cardiac output by pulse power analysis; PCCO_pre, continuous cardiac output by pulse contour analysis before calibration; PCCO_recal, continuous cardiac output by pulse contour analysis after recalibration; CCO_PAC, continuous cardiac output by pulmonary artery catheter thermodilution.

ISSN: 1364-8535