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Effect of BMI on allograft function and survival in pediatric renal transplant recipients
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Effect of BMI on allograft function and survival in pediatric renal transplant recipients
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Effect of BMI on allograft function and survival in pediatric renal transplant recipients
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Journal Article
Effect of BMI on allograft function and survival in pediatric renal transplant recipients
2018
Overview
ObjectiveTo determine whether pre-transplant body mass index (BMI) affects renal allograft function and survival in pediatric renal transplant recipients.Study designThis is a retrospective cohort study using the Organ Procurement and Transplantation Network data from 2000 to 2013 to compare time to total allograft loss (allograft failure or death), prevalence of delayed graft function, prevalence of acute rejection, and estimated glomerular filtration rate (eGFR) post-transplant in pediatric renal transplant recipients categorized by BMI z-score.ResultsA total of 8804 kidney transplant recipients met our inclusion criteria, and of those, 6% were underweight, 14% were overweight, and 17% were obese pre-transplant. The adjusted hazard ratio (HR) for allograft failure was significantly higher for obese recipients compared to normal weight recipients (HR 1.25, 95% CI 1.1, 1.42); for every 1 point increase in BMI z-score, there was a 7% increased hazard of allograft failure (HR 1.07; 95% CI 1.03–1.1, p < 0.001). The prevalence of delayed graft function and acute rejection increased with higher BMI z-score category; however, this difference did not reach statistical significance. eGFR at 1 and 5 years post-transplant decreased with higher BMI z-score although it was only statistically significant at 1 year.ConclusionsObesity is prevalent in pediatric renal transplant recipients, and obese, but not overweight or underweight, pediatric renal transplant recipients have an increased risk of allograft failure. Implementation of effective obesity interventions in pediatric renal transplant recipients is of critical importance to improve longevity of the renal allograft.
Publisher
Springer Nature B.V
Subject
