Nitrogenous content in parenteral nutrition: a four-year experience in a general hospital. Critically-ill patient specificity

espanolIntroduccion: algunos estudios recientes sugieren que se ha dado gran importancia al aporte calorico en la nutricion parenteral (NP) del paciente adulto, infraestimando su contenido proteico. Sin embargo, se ha demostrado su relacion con los resultados clinicos. Con este objetivo se ha estudiado el contenido en nitrogeno (N) de las NP administradas en un hospital terciario a lo largo de cuatro anos. Material y metodos: se recogieron datos de la NP de pacientes hospitalizados en planta, asi como en la Unidad de Cuidados Intensivos (UCI). El peso del paciente, su indice de masa corporal (IMC), el contenido en nitrogeno (total y por peso), el aporte calorico no proteico y la duracion de la NP fueron algunas de las variables estudiadas. Se compararon en 2013 los aportes en la planta general, en UCI y en aquellos que recibieron algun tipo de terapia renal sustitutiva (TRS). Se utilizo el analisis de varianza (ANOVA) de un factor, previa comprobacion de la normalidad y homocedasticidad. Resultados: se ha observado un aumento progresivo en aporte nitrogenado medio diario cada ano (p Conclusiones: En consonancia con las recomendaciones mas recientes, el contenido en nitrogenos ha aumentado con los anos, en especial en la NP del paciente critico, siendo aun mayor en los sometidos a TRS. EnglishIntroduction: There have been several studies focusing on caloric intake during the last years, while protein content relevance has been underestimated. Some recent evidence has shown that protein deficiency has also an impact on patient outcomes. We have studied the nitrogen (N) content in parenteral nutrition (PN) bags administered to adult patients in a Spanish tertiary level hospital for four years. Material and methods: Patients who received parenteral nutrition in the general ward and Intensive Care Unit (ICU) were recorded. Caloric and protein content were registered and adjusted to weight and length of stay. Data were compared among three group of patients: those in the general ward, those in the ICU and those requiring renal replacement therapy (RRT). The one-factor analysis of variance (ANOVA) test was used after checking data normality and homoscedasticity. Results: There was an increase in the mean g N/stay year after year (p Conclusions: According to most recent recommendations nitrogen has been provided in higher amounts than previously, especially in critical care patients with RRT.