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Sarcopenia in Children With End-Stage Liver Disease

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Background: Sarcopenia, reflected by decreased psoas muscle surface area (PMSA), has been identified as a novel and independent predictor of wait-list mortality and outcomes in adult liver transplantation (LT). We… Click to show full abstract

Background: Sarcopenia, reflected by decreased psoas muscle surface area (PMSA), has been identified as a novel and independent predictor of wait-list mortality and outcomes in adult liver transplantation (LT). We hypothesized that children with end-stage liver disease (ESLD) would have smaller PMSA than healthy controls. Methods: Computer tomography images of children (ages 0 to 18 years) listed for LT in 2015 and a control group comprised 2:1 age- and gender-matched healthy pediatric trauma victims were reviewed. PMSA was determined at 2 intervertebral disc (L3/4; L4/5) levels. A subset of images was reviewed by 2 radiologists to determine interrater correlation. Results: A total of 23 children with ESLD were included, and the most prevalent diagnosis was biliary atresia (61%). On both lumbar levels, median PMSA was significantly smaller in ESLD subjects compared with the 46 healthy controls (L4/5; median total PMSA (tPMSA) 407 mm2 (interquartile range 339–537) versus controls 513 mm2 (interquartile range 437–672); P = 0.004), independent of participants’ weight z scores (r = 0.01; P = 0.95). Excellent interrater correlation was seen (intraclass correlation 0.99). Conclusions: In this retrospective pilot study, PMSA was significantly lower in children with ESLD compared with healthy age- and gender-matched controls. Because this finding was independent of growth in ESLD subjects, PMSA may represent a novel objective nutritional biomarker in children with advanced liver disease.

Keywords: stage liver; pmsa; children end; liver disease; end stage

Journal Title: Journal of Pediatric Gastroenterology and Nutrition
Year Published: 2018

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