Effect of Feed Warming Method on Feeding Tolerance in the Preterm Infant Born at Less Than 30 Weeks Gestation

The temperature of milk fed to infants in the Neonatal Intensive Care Unit (NICU) has been
shown to vary greatly, and is influenced by individual provider practice. The clinical
effect of varying milk temperatures on preterm infant feeding tolerance has not been well
studied. The purpose of this study is to examine the effect of warming method, water bath
versus commercial warmer and its impact on feeding tolerance. Sample population will include
eighty-six infants born at 30-0/7 weeks or less, and admitted to the Neonatal Intensive Care
Unit at Advocate Children's Hospital, Park Ridge within 48 hours of birth and remain in the
study for a minimum of 28 days. After obtaining consent, eligible infants will be assigned
to a control (water bath) or experimental (commercial warmer) group using a randomized
sampling scheme. After warming, and just prior to feeding, milk temperatures will be taken
and recorded by a trained data recorder. Feeding tolerance will be measured based on gastric
residual volume and length of time required to achieve full feeds. Based upon the available
evidence, the study investigators hypothesize that warming feeds to a consistent temperature
range using commercially available milk warmer will improve feeding tolerance and decrease
time to full feedings in preterm infants.