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Journal Article
Multicenter Study
Randomized Controlled Trial
Body Composition following Necrotising Enterocolitis in Preterm Infants.
Neonatology 2018
BACKGROUND: The optimal nutritional regimen for preterm infants, including those that develop necrotising enterocolitis (NEC), is unknown.
OBJECTIVE: The objective here was to evaluate body composition at term in infants following NEC, in comparison with healthy infants. The primary outcome measure was non-adipose tissue mass (non-ATM).
METHODS: We compared body composition assessed by magnetic resonance imaging at term in infants born <31 weeks of gestational age that participated in NEON, a trial comparing incremental versus immediate delivery of parenteral amino acids on non-ATM, and SMOF versus intralipid on intrahepatocellular lipid content. There were no differences in the primary outcomes. We compared infants that received surgery for NEC (NEC-surgical), infants with medically managed NEC (NEC-medical), and infants without NEC (reference).
RESULTS: A total of 133 infants were included (8 NEC-surgical; 15 NEC-medical; 110 reference). In comparison with the reference group, infants in the NEC-surgical and NEC-medical groups were significantly lighter [adjusted mean difference (95% CI) NEC-surgical: -630 g (-1,010, -210), p = 0.003; NEC-medical: -440 g (-760, -110), p = 0.009] and the total adipose tissue volume (ATV) was significantly lower [NEC-surgical: -360 cm3 (-516, -204), p < 0.001; NEC-medical: -127 cm3 (-251, -4); p = 0.043]. There were no significant differences in non-ATM [adjusted mean difference (95% CI) NEC-surgical: -46 g (-281, 189), p = 0.70; NEC-medical: -122 g (-308, 63), p = 0.20].
CONCLUSION: The lower weight at term in preterm infants following surgically and medically managed NEC, in comparison to preterm infants that did not develop the disease, was secondary to a reduction in ATV. This suggests that the nutritional regimen received was adequate to preserve non-ATM but not to support the normal third-trimester deposition of adipose tissue in preterm infants.
OBJECTIVE: The objective here was to evaluate body composition at term in infants following NEC, in comparison with healthy infants. The primary outcome measure was non-adipose tissue mass (non-ATM).
METHODS: We compared body composition assessed by magnetic resonance imaging at term in infants born <31 weeks of gestational age that participated in NEON, a trial comparing incremental versus immediate delivery of parenteral amino acids on non-ATM, and SMOF versus intralipid on intrahepatocellular lipid content. There were no differences in the primary outcomes. We compared infants that received surgery for NEC (NEC-surgical), infants with medically managed NEC (NEC-medical), and infants without NEC (reference).
RESULTS: A total of 133 infants were included (8 NEC-surgical; 15 NEC-medical; 110 reference). In comparison with the reference group, infants in the NEC-surgical and NEC-medical groups were significantly lighter [adjusted mean difference (95% CI) NEC-surgical: -630 g (-1,010, -210), p = 0.003; NEC-medical: -440 g (-760, -110), p = 0.009] and the total adipose tissue volume (ATV) was significantly lower [NEC-surgical: -360 cm3 (-516, -204), p < 0.001; NEC-medical: -127 cm3 (-251, -4); p = 0.043]. There were no significant differences in non-ATM [adjusted mean difference (95% CI) NEC-surgical: -46 g (-281, 189), p = 0.70; NEC-medical: -122 g (-308, 63), p = 0.20].
CONCLUSION: The lower weight at term in preterm infants following surgically and medically managed NEC, in comparison to preterm infants that did not develop the disease, was secondary to a reduction in ATV. This suggests that the nutritional regimen received was adequate to preserve non-ATM but not to support the normal third-trimester deposition of adipose tissue in preterm infants.
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