Fig. 2From: Continuous and repeat metabolic measurements compared between post-cardiothoracic surgery and critical care patientsVentilation and Carbon Dioxide Levels. A Minute ventilation volume (SPTD) measured at the exhaust port. B Fraction of expired carbon dioxide (FECO2). C Fraction of expired carbon dioxide measured at the exhaust port. n = 4 for post-surgery, n = 6 for critical care patients. Subjects IDs are corresponding to those in Table 1Back to article page