Journal
CLINICAL JOURNAL OF PAIN
Volume 24, Issue 5, Pages 447-455Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/AJP.0b013e3181633fd6
Keywords
premature infants; enteral nutrition; behavior; stress; video recording
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Objective: To compare the effect of continuous versus bolus feeding on behavioral responses of stress in very low birth weight infants during early postnatal life. Methods: In a randomized, controlled trial conducted at 3 neonatal units, 70 premature infants with gestational age 24 to 29 weeks and birth weight < 1200g were randomly assigned to 1 of 3 feeding methods: continuous nasogastric feeding, bolus nasogastric feeding, and bolus orogastric feeding. Behavioral responses were video recorded during feeding at 7 and 15 days of postnatal age and at 32 weeks of postmenstrual age. The odds ratio (OR) of manifest behavioral stress was calculated by means of logistic regression. Results: A significantly higher risk of a behavioral stress response in bolus-fed infants compared with continuous-fed infants at 15 days of age was observed, [adjusted OR = 4.1 (95% confidence interval: 1.1-15.4)]. A similar difference was observed at 32 weeks of postmenstrual age [adjusted OR = 4.2 (95% confidence interval: 1.0-17.8)]. In addition, bolus-fed infants showed statistically significant higher need of behavioral and physiologic stabilization during feeding. Discussion: This trial suggests that continuous feeding is associated with lower behavioral stress response as compared with bolus feeding among very low birth weight infants, in early postnatal life.
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