• Sinead J Glackin, Anne O'Sullivan, Sherly George, Jana Semberova, and Jan Miletin.
• Department of Neonatology, Coombe Women and Infants University Hospital, Dublin, Ireland.
• Arch. Dis. Child. Fetal Neonatal Ed. 2017 Jul 1; 102 (4): F329-F332.

ObjectiveTo compare the time taken by preterm infants with evolving chronic lung disease to achieve full oral feeding when supported with humidified high flow nasal cannula (HFNC) or nasal continuous positive airway pressure (NCPAP).DesignSingle centre randomised controlled trial.SettingLevel III neonatal intensive care unit at the Coombe Women and Infants University Hospital, Dublin, Ireland.PatientsVery low birthweight (birth weight <1500 g) infants born before 30 weeks' gestation who were NCPAP-dependent at 32 weeks corrected gestational age were eligible to participate.InterventionsEnrolled infants were randomised in a 1:1 ratio to receive HFNC or NCPAP. Participants were monitored daily until full oral feeding was established and the baby was off respiratory support.Main Outcome MeasuresOur primary outcome was the number of days taken to establish full oral feeds (defined as oral intake ≥120 mL/kg/day) from the time of randomisation. We estimated that enrolling 44 subjects (22 in each group) would allow us demonstrate a 7-day difference in our primary outcome with 80% power and α of 5%.ResultsForty-four infants were randomised (22 to HFNC vs 22 to NCPAP). The mean time to achieve full oral feeding was not different between the groups (HFNC 36.5 (±18.2) days vs NCPAP 34.1 (±11.2) days, p=0.61).ConclusionsPreterm infants treated with HFNC did not achieve full oral feeding more quickly than infants treated with NCPAP.Trial Registration NumberISRCTN66716753.Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

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