Multiple micronutrient deficiencies among patients with intestinal failure during and after transition to enteral nutrition.

OBJECTIVES: To determine the prevalence of deficiencies of specific micronutrients (iron, zinc, magnesium, phosphorus, selenium, copper, folate, and vitamins A, D, E, and B12) in children with intestinal failure (IF), and to identify risk factors associated with developing these deficiencies. STUDY DESIGN: This study was a retrospective review of prospectively collected data from 178 children with IF managed by the Intestinal Care Center of Cincinnati Children's Hospital Medical Center between August 1, 2007, and July 31, 2012. Transition to full enteral nutrition (FEN) was defined as the period during which the patient received between 20% and 100% of estimated required nutrition enterally. FEN was defined as the patient's ability to tolerate 100% estimated required nutrition enterally for >2 weeks. RESULTS: Necrotizing enterocolitis was the most common cause of IF (27.5%). Iron was the most common micronutrient deficiency identified both during (83.9%) and after (61%) successful transition to FEN, with a significant reduction in the percentage of patients with iron deficiency between these 2 periods (P = .003). Predictors of micronutrient deficiency after successful transition to FEN included birth weight (P = .03), weight percentile (P = .02), height percentile (P = .04), and duration of parenteral nutrition (PN) (P = .013). After multivariate adjustments, only duration of PN remained statistically significant (P = .03). CONCLUSION: Micronutrient deficiencies persist in patients with IF during and after transition to FEN. These data support the need for routine monitoring and supplementation of these patients, especially those on prolonged PN.

Micronutrient deficiencies in pediatric and young adult intestinal transplant patients.

Intestinal transplant recipients are at risk of micronutrient deficiency due to the slow process of post-transplant adaptation. Another contributing factor is calcineurin inhibitor-induced renal tubular dysfunction. Patients are typically supplemented with micronutrients during PN; however, the risk of deficiency may persist even after a successful transition to FEN. The goal was to determine the prevalence of, and associated risk factors for, iron, zinc, magnesium, phosphorus, selenium, copper, folate, and vitamins A, D, E, and B12 deficiency in pediatric intestinal transplant recipients after successful transition to FEN. A retrospective review of prospectively collected data from children who underwent intestinal transplantation at Cincinnati Children's Hospital Medical Center was done. Deficiencies of various micronutrients were defined using the hospital reference values. Twenty-one intestinal transplant recipients, aged one to 23 yr, who were successfully transitioned to FEN were included in the study. The prevalence of micronutrient deficiency was 95.2%. The common deficient micronutrients were iron (94.7%) and magnesium (90.5%). Age ≤ 10 yr (p = 0.002) and tube feeding (p = 0.02) were significant risk factors for micronutrient deficiencies. Pediatric intestinal transplant recipients have a high risk of micronutrient and mineral deficiencies. These deficiencies were more common among younger patients and those who received jejunal feeding.