Neonatal Ed Published

Background Postnatal growth restriction is common in preterm infants and is associated with long-term neurodevelopmental impairment. Recent trends in postnatal growth restriction are unclear. Methods Birth and discharge weights from 25 899 Californian very low birthweight infants (birth weight 500–1500 g, gestational age 22–32 weeks) who were born between 2005 and 2012 were converted to age-specific Z-scores and analysed using multivariable modelling. Results Birthweight Z-score did not change between 2005 and 2012. However, the adjusted discharge weight Z-score increased significantly by 0.168 Z-scores (0.154, 0.182) over the study period, and the adjuste