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Fig. 4 | BMC Anesthesiology

Fig. 4

From: Accuracy of an autocalibrated pulse contour analysis in cardiac surgery patients: a bi-center clinical trial

Fig. 4

a, b Four quadrant concordance plots of changes of cardiac index measured by transpulmonary thermodilution (CITPTD) and cardiac index estimated by autocalibrated semi-invasive pulse contour analysis (CIPFX) before and after cardiopulmonary bypass (CPB). Changes below 15 % (gray rectangle) were excluded from correlation analysis. c, d Polar plot analysis on trending ability of changes in cardiac index (∆CI) before and after cardiopulmonary bypass (CPB). The solid line included data pairs within the 10 % limits of agreement (± 0.30 L/min/m2 before and ± 0.35 L/min/m2 after CPB) and indicated good trending. Data pairs within the 20 % limits of agreement (±0.6 L/min/m2 before and ± 0.7 L/min/m2 after CPB, dotted line) indicated acceptable trending ability. The mean CI was 3.0 L/min/m2 before and 3.5 L/min/m2 after CPB. Exclusion zone was determined <0.2 L/min/m2.

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