“…Besides potential limitations, we need to consider various other properties of different monitoring modalities when choosing the optimal tool for the individual patient; this includes accuracy, precision, and trending ability of the CO measurements, continuity of measurements (continuous, semi-continuous, or intermittent CO might be required in different clinical situations), and options to calibrate to reference CO values [2]. For instance, in many occasions it may not be essential to know if the actual CO is 3.9 or 4.2 L/min rather than to reliably track its changes after a certain intervention, e.g.…”