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Aim:

The aim of the study was to evaluate the relation between nutrition practices and growth rate in preterm infants from birth to 36 weeks postmenstrual age (PMA).

Methods:

Longitudinal data were collected retrospectively in 103 infants born< 33 weeks gestation admitted to Dunedin Neonatal Intensive Care Unit, New Zealand. Weight, length, and head circumference at birth and 36 weeks PMA z scores were calculated using the INTERGROWTH Preterm Growth Standard. Growth velocity (g· kg− 1· day− 1) was determined via exponential model. Time to regain birth weight and nutritional practices including enteral nutrition, withholding feeds, nutrient intake, and feeding at discharge were described. Regression was used to explore associations between growth and nutritional variables.

Results:

Growth faltering (weight-for-age z score<− 1.28/10th centile) increased from 9% at birth to 19% at 36 weeks PMA. Mean …