Prevalence of Early Feeding Alterations Among Preterm Infants and Their Relationship to Early Neurobehavior
Molly Grabill, Joan Smith, Carolyn Ibrahim, Roberta Pineda
Abstract
IMPORTANCE: Feeding difficulties are common among preterm infants during neonatal intensive care unit (NICU) hospitalization. Although most preterm infants achieve full oral feeding by term-equivalent age, whether feeding difficulties persist despite the infant taking full volume and whether these difficulties may relate to other neurobehavioral challenges remain unclear. OBJECTIVE: To identify the prevalence of feeding problems among preterm infants and the relationships between infant feeding behaviors and neurobehavior at term-equivalent age. DESIGN: Cohort study. SETTING: Level 4 NICU with 85 beds. PARTICIPANTS: Thirty-nine very preterm infants born ≤32 wk gestation (range = 22-32 wk). Exclusion criteria were congenital anomalies, >32 wk gestation at birth, and lack of feeding or neurobehavioral assessment at term-equivalent age. OUTCOMES AND MEASURES: Standardized feeding assessments using the Neonatal Eating Outcome Assessment and standardized neurobehavioral evaluation using the NICU Network Neurobehavioral Scale. RESULTS: Thirty-nine infants (21 female) were included in the final analysis. The mean Neonatal Eating Outcome Assessment score was 66.6 (SD = 13.3). At term-equivalent age, 10 infants (26%) demonstrated feeding challenges, 21 (54%) demonstrated questionable feeding issues, and 8 (21%) demonstrated normal feeding performance. Lower Neonatal Eating Outcome Assessment scores (poorer feeding performance) at term-equivalent age were associated with more suboptimal reflexes (p = .04) and hypotonia (p < .01). CONCLUSIONS AND RELEVANCE: Feeding challenges and questionable feeding performance were prevalent among preterm infants at term-equivalent age and appeared in conjunction with suboptimal reflexes and hypotonia. Understanding this finding enables therapists to take a holistic approach to addressing feeding difficulties. What This Article Adds: Elucidating the relationships between feeding performance and neurobehavior during the neonatal period allows for a better understanding of potential contributors to early feeding challenges and identifies targets for intervention.