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  • Title: Preoperative nutritional status and use of total parenteral nutrition in pediatric and adolescent patients undergoing continent urinary tract reconstruction.
    Author: Strine AC, VanderBrink BA, Riazzi AC, Schulte M, Mayes T, Noh PH, DeFoor WR, Minevich E, Sheldon CA, Reddy PP.
    Journal: J Pediatr Urol; 2018 Dec; 14(6):572.e1-572.e7. PubMed ID: 30154048.
    Abstract:
    INTRODUCTION: A nutritional assessment is a critical but often neglected aspect of a preoperative evaluation. Malnutrition is clearly associated with worse surgical outcomes in adults undergoing major abdominal surgery, whereas a paucity of evidence is available in the pediatric population. OBJECTIVE: The objectives were to describe the preoperative nutritional status of pediatric and adolescent patients undergoing continent urinary tract reconstruction and to determine the association among malnutrition, use of total parenteral nutrition (TPN), and surgical outcomes. STUDY DESIGN: A retrospective cohort study was performed for patients aged up to 20 years who underwent continent urinary tract reconstruction between January 2012 and November 2016. Malnutrition was classified with body mass index and height for age z-scores on admission as well as change in z-scores and weight over the 3-6 months before surgery. Primary outcomes included the duration of intensive care and hospitalization as well as readmissions and complications within 30 days. RESULTS: A total of 123 patients who underwent 130 continent urinary tract reconstructions were identified during the study period. Demographic and perioperative data are provided in the Table. Anthropometric and biochemical measurements as well as the early initiation of TPN (≤2 days) were not associated with any primary outcomes. In a subgroup analysis of patients with a bowel anastomosis, the early initiation of TPN was an independent predictor for duration of hospitalization (P < 0.0001) and 30-day complications (odds ratio 9.51, P = 0.005) after adjusting for other statistically significant and clinically relevant variables. DISCUSSION: The few available studies on surgical nutrition have primarily focused on infants and young children undergoing cardiac surgery and provided no consensus on a preoperative nutritional assessment. The findings on TPN from the present study favorably compare with a growing body of evidence in adult and pediatric critically ill and surgical patients. The limitations of the present study include its retrospective design at a single institution, potential misclassification of nutritional status, and selection bias from the initiation of TPN at the discretion of the primary surgeon. CONCLUSIONS: Malnutrition was identified in greater than 20% of pediatric and adolescent patients undergoing continent urinary tract reconstruction. Anthropometric and biochemical parameters were not associated with surgical outcomes, although the early initiation of TPN did not offer any benefit for nutritional support. In a subset of patients with a bowel anastomosis, TPN was associated with worse surgical outcomes, including a longer duration of hospitalization and development of 30-day complications.
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