A comparison of three vitamin a dosing regimens in extremely-low-birth-weight infants

Autor: Namasivayam Ambalavanan, Waldemar A. Carlo, Claire Roane, Jon E. Tyson, Tzong-Jin Wu, Kathleen A. Kennedy
Rok vydání: 2003
Předmět:
Zdroj: The Journal of Pediatrics. 142:656-661
ISSN: 0022-3476
DOI: 10.1067/mpd.2003.214
Popis: Objective Vitamin A supplementation reduces bronchopulmonary dysplasia (BPD)/death in extremely low birth weight neonates. It was hypothesized that compared with the standard regimen of 5000 IU 3 times per week for 4 weeks, (1) a higher dose (10,000 IU 3 × per week) would increase serum retinol and retinol binding protein (RBP) and lower relative dose responses (RDR), and (2) once-per-week dosing (15,000 IU once per week) would lead to equivalent levels, RBP, and RDR. Study design Extremely low birth weight neonates (n = 120) receiving O2/mechanical ventilation at 24 hours were randomly assigned to (1) standard, (2) higher dose, or (3) once-per-week regimens. Measures of vitamin A deficiency were serum retinol 10% on day 28. BPD was defined as O2/mechanical ventilation at 36 weeks' postmenstrual age. Results Groups were similar at enrollment (median gestational age, 25 weeks; birth weight, 689 g). Possible toxicity was seen in
Databáze: OpenAIRE