Resting energy expenditure and nitrogen loss after surgery in chronically undernourished patients

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Abstract
Chronically undernourished patients (n=10) undergoing elective abdominal surgery were assessed with regard to their energy expenditure and urinary nitrogen loss. These measurements were made for 1 week after the surgery, and stress factors for each parameter were computed. The responses of the chronically undernourished patients were compared to those of relatively well nourished patients (n=10) undergoing comparable surgeries. It was found that the postoperative resting energy expenditure (REE) of the chronically undernourished patients was not significantly elevated when compared to their preoperative values (mean±SEM): 1210.66±88.13, 1354.91±86.61, 1215.09±89.68, and 1188.23±86.61 kcal/day preoperatively and on postoperative days 1, 4, and 8, respectively. On the other hand, the postoperative REE of the controls was significantly elevated (ppn=10) sometidos a cirugía abdominal electiva fueron valorados en cuanto al gasto energético y las pérdidas urinarias de nitrógeno. Se hicieron mediciones una semana después de la cirugía y se calcularon los factores de estrés para cada parámetro. Los datos de los pacientes con desnutrición crónica fueron comparados con los de pacientes relativamente bien nutridos (n=10) sometidos a operaciones comparables. Se encontró que el gasto energético en reposo (REE) de los pacientes con desnutrición crónica no aparece significativamente elevado al compararlo con los valores preoperatorios (1210.66±88.13, 1354.91±86.61, 1215.09 ±89.68, 1188.23±86.61, kcal/día; preoperatorío, días 1, 4, y 8 postoperatorios...