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Antenatal betamethasone compared with dexamethasone (betacode trial): a randomized controlled trial
Andrew Elimian1, David Garry, Reinaldo Figueroa
1Department of Obstetrics, Gynecology and Reproductive Medicine, Stony Brook University, Stony Brook, New York, USA. andrew-elimian@ouhsc.edu
Obstetrics and Gynecology
|July 3, 2007
Summary
Dexamethasone and betamethasone are comparable for preterm infant outcomes, but dexamethasone significantly reduces intraventricular hemorrhage risk. This finding is crucial for optimizing antenatal steroid therapy in high-risk pregnancies.
Area of Science:
- Neonatal Medicine
- Obstetrics
- Pharmacology
Background:
- Antenatal corticosteroids are crucial for fetal lung maturation in preterm infants.
- Betamethasone and dexamethasone are commonly used antenatal steroids.
- Comparing their efficacy in reducing perinatal morbidities is essential.
Purpose of the Study:
- To compare the effectiveness of antenatal betamethasone versus dexamethasone.
- To assess the reduction in perinatal morbidities and mortality in preterm infants.
Main Methods:
- A double-blind, placebo-controlled, randomized trial involving 299 women at risk for preterm delivery.
- Exclusion criteria included chorioamnionitis, fetal abnormalities, and prior steroid exposure.
- Intention-to-treat analysis was employed.
Main Results:
- No significant differences in respiratory distress syndrome, need for vasopressors, necrotizing enterocolitis, retinopathy of prematurity, patent ductus arteriosus, neonatal sepsis, or neonatal mortality.
- Significantly lower rates of intraventricular hemorrhage (5.7% vs. 17.0%) and brain lesions (6.7% vs. 18.0%) in the dexamethasone group.
- Dexamethasone showed an absolute risk reduction of 11.3% for intraventricular hemorrhage, with a number needed to treat of 9.
Conclusions:
- Betamethasone and dexamethasone are comparable in preventing most major neonatal morbidities and mortality.
- Dexamethasone demonstrates superior efficacy in reducing the incidence of intraventricular hemorrhage in preterm neonates.
- Findings suggest dexamethasone may be a preferred antenatal steroid for reducing specific neonatal brain injuries.
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