Association of Caloric Intake, Protein Intake, and Enteral Feeding Initiation with Weight Gain in Infants Born 32 to 34 Weeks' Gestation

Abstract

Objective This study aimed to determine the association of caloric intake, protein intake, and enteral feed initiation time in the first 3 days of life with weight loss percentage (%WL) at 7 days among infants born 32 to 34 weeks' gestational age (GA).

Study Design This is a retrospective cohort study of 252 infants admitted to a neonatal intensive care unit. Patient data included patient characteristics, daily weight, intake, and method of nutrition in the first 3 days. Multivariate linear regression was used to explore associations between outcome (%WL at day 7 of life) and exposures (caloric intake, protein intake, and enteral feed initiation time) and adjusted for covariates (GA, birth weight, and sex).

Results Median 7 days %WL was 2.3% (interquartile range: −5.2, 1.2). Average caloric intake and average protein intake in the first 3 days were 57 kcal/kg/d and 2.3 g/kg/d. In the adjusted linear regression, caloric intake and protein intake (coefficient = 0.03, 95% confidence interval [CI]: −0.06, 0.09 and coefficient = 0.11, 95% CI: −0.36, 2.30) were not associated with %WL at 7 days. Enteral feeds ≤12 hours were associated with less %WL at 7 days of life (Coef = −0.15, 95% CI: −2.67, −0.17).

Conclusion Enteral feeds ≤12 hours after delivery is associated with lower %WL at 7 days among preterm infants 32 to 34 weeks' GA.

Keywords

preterm - nutrition - growth - parenteral nutrition - enteral nutrition

Publication History

Received: 16 February 2019

Accepted: 17 May 2019

Article published online:
25 June 2019

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