Hospital malnutrition is known as a risk factor for mortality and morbidity in children, adolescents, and adults. Critically ill child more prone to suffer from malnutrition during treatment. This is because protein metabolism in critically ill children in different to the healthy children. Protein metabolism in critically ill children influenced by catabolic hormones triggered by stressful state resulting in increased protein breakdown. Therefore the protein requirement for critically ill children is different from healthy children. There are several methods of evaluation that can be used to evaluate the protein metabolism status, among others anthropometry, nitrogen balance, and tracer isotope. The importance of maintaining the balance of formation and protein breakdown must be one of the targets of nutritional therapy in the pediatric intensive care unit, thus improving treatment outcomes.Keyword : critically ill, protein metabolism, children
                        
                        
                        
                        
                            
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