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  • Title: Weight Gain Trajectory Predicts Long-term Overweight and Obesity After Pediatric Liver Transplant.
    Author: Swenson SM, Perito ER.
    Journal: J Pediatr Gastroenterol Nutr; 2019 Jan; 68(1):89-95. PubMed ID: 30119101.
    Abstract:
    OBJECTIVE: The aim of the study is to identify early predictors of long-term overweight and obesity in pediatric liver transplant recipients. METHODS: Single-center, retrospective review of children who underwent liver transplant before age 6 years. Body mass index (BMI), weight, and height percentiles at transplant and post-transplant were calculated. BMI, weight gain trajectories, and failure-to-thrive (FTT) were examined as predictors of overweight/obesity at 3 and 5 years post-transplant. RESULTS: Children (n = 70) were median 0.9 years at transplant. Median BMI percentile increased from 37 (interquartile range (IQR) 12-73) at transplant to 83 (IQR 64-97) at 12 months, with median weight percentile 47 (IQR 26-67) and height percentile 9 (IQR 2-32). Overweight/obesity prevalence peaked at 3 years post-transplant (44%). Children who were overweight/obese at 3 years post-transplant were more likely to be overweight/obese at transplant, and at 6 and 12 months post-transplant (odds ratio (OR): 9.4, P = 0.02; OR: 6.7, P = 0.013, OR: 6.4, P = 0.007, respectively). The prevalence of overweight/obesity decreased to 26% at 5 years. Rapid weight gain post-transplant did not predict overweight/obesity at 3 or 5 years. Over one-third of children who were FTT at transplant were overweight/obese at 3 or 5 years, but FTT at transplant did not increase later obesity risk. CONCLUSIONS: Most children gain weight rapidly after liver transplant. Nearly half of transplant recipients are overweight/obese at 3 years, but the prevalence decreases by 5 years. Those who become overweight/obese tend to do so within 1 year post-transplant, making this an important time to identify high-risk children and provide counseling.
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