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Figure 2 | Critical Care

Figure 2

From: Arterial pressure-based cardiac output in septic patients: different accuracy of pulse contour and uncalibrated pressure waveform devices

Figure 2

Receiver operating characteristic (ROC) curves. (a) ROC curves constructed for testing the ability of the changes in cardiac index obtained by the pulse-contour analysis (CIpc) (straight line) and of the changes in cardiac index obtained by the arterial-pressure waveform analysis (CIpw) (dashed line) to detect an increase in cardiac index obtained by transpulmonary thermodilution (CItd) ≥15% induced by me expansion. (b) ROC curves constructed for testing the ability of the changes in cardiac index obtained by the pulse-contour analysis (CIpc) (straight line) and of the changes in cardiac index obtained by the arterial-pressure waveform analysis (CIpw) (dashed line) to detect an increase in cardiac index obtained by transpulmonary thermodilution (CItd) ≥15% induced by the introduction/increase in norepinephrine.

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