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Table 1 Patient characteristics

From: Can calculation of energy expenditure based on CO2 measurements replace indirect calorimetry?

Patients n (%) 278 (100.0)
 Male   191 (68.7)
 Female   87 (31.3)
Age, years   56 (18)
Height, cm   172 (9)
Anamnestic body weight, kg   76 (18)
Body mass index, kg/m2   25.9 (5.9)
Admission diagnosis n (%)   
 Shock   60 (21.6)
 Multiple trauma   52 (18.7)
 Neurologic   31 (11.2)
 Respiratory failure   22 (7.9)
 Cardiac surgery   20 (7.2)
 Pneumonia   18 (6.5)
 Acute pancreatitis   11 (4.0)
 Myocardial infarction   10 (3.6)
 Post-cardiac arrest   8 (2.9)
 Liver failure   8 (2.9)
 Others   38 (13.7)
APACHE II score   24 (7)
SAPS II   51 (17)
Length of ICU stay, days median (IQR) 21 (12–37)
ICU day of evaluation, days median (IQR) 8 (4–18)
Glasgow Coma Scale median (IQR) 10 (8–14)
Sedation-Agitation Scale median (IQR) 4 (3–4)
Body temperature, °C   37.3 (0.6)
FiO2, %   30 (7)
Minute volume, L/min BTPS   12 (3)
VO2, mL/min STPD   279 (61)
VCO2, mL/min STPD   234 (53)
Respiratory quotient   0.84 (0.09)
Energy expenditure, kcal/day   1956 (426)
Energy provision, kcal/day   1658 (696)
Energy provision rate, %   86 (35)
Nutrition route n (%)   
 Enteral nutrition (EN)   196 (70.5)
 Parenteral nutrition (PN)   24 (8.6)
 EN + PN   55 (19.8)
 Non-nutrition energy sources   3 (1.1)
Food quotient   0.87 (0.01)
  1. Results shown as mean (standard deviation) unless otherwise indicated
  2. APACHE Acute Physiology and Chronic Health Evaluation, SAPS Simplified Acute Physiology Score, FiO 2 fraction of inspired O2, BTPS body temperature (37 °C) ambient pressure water saturated condition, STPD standard temperature (0 °C) standard pressure (760 mmHg) dry condition, VO 2 volume of O2 consumption, VCO 2 volume of CO2 production, IQR interquartile range