Evaluation of Energy Expenditure during the Early Postoperative Period in Colorectal Cancer Patients (First Report)

Energy expenditure and non-protein respiratory quotation (npRQ) were measured in twelve uncomplicated patients, recieved on elective operation for colorectal cancer, on the 1st, 3rd and 7th day postoperatively using on indirect calorimetry with a mouthpiece and a noseclip. The investigation items were as follows : 1) caloric intake (kcal) /basal energy expenditure (BEE) and resting energy expenditure (REE) -BEE/BEE, 2) caloric intake (CAL IN) /body weight (kg) and npRQ, 3) CAL IN/body weight (kg) and nitrogen balance (N-BAL), 4) caloric sufficiency (CAL SF) /body weight and npRQ, and 5) CAL SF/body weight (kg) and N-BAL. Positive correlation was found in all of the 5 items above. Acording to these data, energy expenditure during the postoperative period in colorectal cancer patients increased by 19.2 % when caloric intake was about BEE, and npRQ showed 1 when caloric intake and caloric sufficiency was 30.7 kcal/kg and 0.96 (27.2 kcal/kg as CAL IN), respectively. These results indicate the best energy intake for on elective operation in colorectal cancer was about 27.230.7 kcal/kg.