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Graphical 4-quadrant plot representation of the original data previously published by de Wilde, comparing cardiac output measurement with thermodilution and 5 arterial pulse contour devices: Wesseling's method (A) LiDCO (B), PiCCO (C), Hemac method (D), and Modelflow (E), (N = 172). A specific color is applied to each change: uninterpretable (blue), non-interchangeable (red), in the gray zone of interpretation (orange), and interchangeable (green).
