Patent ID: 8690784

Claim:
A method of monitoring a patient's parameters during a cardiac operation with cardiopulmonary bypass, a heart-lung machine and a monitoring system operably connected to the heart-lung machine, the monitoring system including a processor and a display operably connected to the processor, the method comprising: detecting a pump flow (Qp) value from a pump of the heart-lung machine; detecting a hematocrit (HCT) value from an arterial or venous line of the heart-lung machine; obtaining an arterial oxygen saturation (Sat(a)) value derived from an arterial blood of the patient; obtaining an arterial oxygen tension (PaO2) value derived from the arterial blood of the patient; calculating, via the processor, an oxygen delivery (DO2) value; calculating, via the processor, a carbon dioxide production (VCO2) value; and displaying a comparison of the DO2 value and the VCO2 value on the display of the monitoring system.