BACKGROUND: Late preterm birth accounts for 70% of preterm births. The aim of the study was to investigate the postnatal weight gain and weight gain composition changes in a cohort of late preterm infants. METHODS: A total of 49 late preterm infants (mean birth weight 2,496 ± 330 g and gestational age 35.2 ± 0.7 wks) underwent growth and body composition assessment by an air displacement plethysmography system on the fifth day of life, at term, and at 1 and 3 mo of corrected age. The reference group was composed of 40 healthy, full-term, breast-fed infants. RESULTS: The late preterm infants showed a Δ fat mass gain between birth and term-corrected age equal to 182%. As compared with full-term infants, at term and 1 mo of corrected age mean weight (3,396 ± 390 vs. 3,074 ± 409 g and 4,521 ± 398 vs. 4,235 ± 673 g, respectively) and percentage of fat mass (16.1 ± 4.6 vs. 8.9 ± 2.9 and 22.6 ± 4.2 vs. 17.4 ± 4.0, respectively) were significantly higher in late preterm infants, whereas no difference among groups was found at 3 mo. CONCLUSION: Rapid postnatal catch-up fat was found in these infants. Further studies are needed to investigate whether this short-term increase in fat mass may modulate the risk of chronic diseases or represent an adaptive mechanism to extrauterine life.
BACKGROUND: Late preterm birth accounts for 70% of preterm births. The aim of the study was to investigate the postnatal weight gain and weight gain composition changes in a cohort of late preterm infants. METHODS: A total of 49 late preterm infants (mean birth weight 2,496 ± 330 g and gestational age 35.2 ± 0.7 wks) underwent growth and body composition assessment by an air displacement plethysmography system on the fifth day of life, at term, and at 1 and 3 mo of corrected age. The reference group was composed of 40 healthy, full-term, breast-fed infants. RESULTS: The late preterm infants showed a Δ fat mass gain between birth and term-corrected age equal to 182%. As compared with full-term infants, at term and 1 mo of corrected age mean weight (3,396 ± 390 vs. 3,074 ± 409 g and 4,521 ± 398 vs. 4,235 ± 673 g, respectively) and percentage of fat mass (16.1 ± 4.6 vs. 8.9 ± 2.9 and 22.6 ± 4.2 vs. 17.4 ± 4.0, respectively) were significantly higher in late preterm infants, whereas no difference among groups was found at 3 mo. CONCLUSION: Rapid postnatal catch-up fat was found in these infants. Further studies are needed to investigate whether this short-term increase in fat mass may modulate the risk of chronic diseases or represent an adaptive mechanism to extrauterine life.
Authors: Kelly M Daly-Wolfe; Kristine C Jordan; Hillarie Slater; Joanna C Beachy; Laurie J Moyer-Mileur Journal: Pediatr Res Date: 2015-05-28 Impact factor: 3.756
Authors: José Villar; Fabien A Puglia; Tanis R Fenton; Leila Cheikh Ismail; Eleonora Staines-Urias; Francesca Giuliani; Eric O Ohuma; Cesar G Victora; Peter Sullivan; Fernando C Barros; Ann Lambert; Aris T Papageorghiou; Roseline Ochieng; Yasmin A Jaffer; Douglas G Altman; Alison J Noble; Michael G Gravett; Manorama Purwar; Ruyan Pang; Ricardo Uauy; Stephen H Kennedy; Zulfiqar A Bhutta Journal: Pediatr Res Date: 2017-05-31 Impact factor: 3.756
Authors: Hajar Mazahery; Pamela R von Hurst; Christopher J D McKinlay; Barbara E Cormack; Cathryn A Conlon Journal: Matern Health Neonatol Perinatol Date: 2018-06-20
Authors: Tanith Alexander; Michael Meyer; Jane E Harding; Jane M Alsweiler; Yannan Jiang; Clare Wall; Mariana Muelbert; Frank H Bloomfield Journal: Front Pediatr Date: 2022-03-31 Impact factor: 3.418