The following haemodynamic and metabolic data were obtained from a patient admitted to the ICU with sepsis.
Pulmonary artery catheter data:
- CI 4.2 L/min/m2
- DO2 900 ml/min
- VO2 190 ml/min
Indirect calorimetry data:
- VO2 220 ml/min
- VCO2 290 ml/min
a) Why is the VO2 different between the two methods? (Assume no measurement errors.)
b) What changes in patient management will you consider based on the indirect calorimetry data?