Monitoring of protein catabolism in neonates and young XXXX post-cardiac surgery.

@entity1 @entity1568 @entity1391 @entity299 @entity1011
AIMS: To evaluate cell catabolism by balance of @entity1568 and @entity1391 , and @entity1011 excretion in @entity1 post-cardiac surgery; to establish protein and energy requirements to minimize catabolism; and to assess nutritional therapy by following these parameters and serial anthropometric measurements. METHODS: A prospective observational study of @entity1 with @entity299 undergoing cardiac surgery. Blood samples and 24-h urine collections were obtained postoperatively for @entity1011 measurement and @entity1568 and @entity1391 balance. Anthropometric measurements (weight, mid-arm muscle circumference and triceps skinfold thickness) were obtained preoperatively and at paediatric intensive care unit and hospital discharge. RESULTS: Eleven @entity1 were studied for 3-10 postoperative days. Anabolism was associated with higher protein and energy intakes compared to catabolism (1.1 vs. 0.1   g/kg/day and 54 vs. 17   kcal/kg/day, respectively). On days with anabolism, @entity1391 balance was greater compared with that on days with catabolism. Daily @entity1011 excretion did not correlate with protein balance. Anthropometric measurements did not change significantly over time. CONCLUSIONS: @entity1 with @entity299 undergoing cardiac surgery achieved anabolism with >55   kcal/kg/day and >1   g/kg/day of protein. Balance of @entity1391 was useful to monitor cell breakdown. Anthropometric measurements were not valuable to evaluate nutritional therapy in this population.
