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Nifedipine compared with atosiban for treating preterm labor: a randomized controlled trial
Raed Salim1, Gali Garmi, Zohar Nachum
1Department of Obstetrics and Gynecology, Emek Medical Center, Afula, Israel. salim_ra@clalit.org.il
Obstetrics and Gynecology
|November 22, 2012
Summary
Atosiban demonstrated higher efficacy in preventing preterm delivery within 48 hours compared to nifedipine. However, nifedipine was associated with a longer delay in delivery, suggesting a potential benefit for postponing birth in preterm labor cases.
Area of Science:
- Obstetrics and Gynecology
- Perinatology
- Pharmacology
Background:
- Preterm labor is a significant concern in obstetrics, necessitating effective tocolytic agents.
- Comparing the efficacy and tolerability of different tocolytic drugs is crucial for optimizing patient care.
Purpose of the Study:
- To compare the tocolytic efficacy and tolerability of atosiban versus nifedipine in pregnant women experiencing preterm labor.
- To assess the proportion of women not delivered within 48 hours and the need for alternative tocolytic agents.
Main Methods:
- A randomized trial involving pregnant women (24-33 weeks 6 days gestation) with preterm labor.
- Women were assigned to atosiban or nifedipine, with a planned treatment duration of up to 48 hours.
- Crossover to an alternative drug was permitted if labor progressed.
Main Results:
- Atosiban showed a higher success rate (68.6%) in preventing delivery within 48 hours compared to nifedipine (52%).
- Nifedipine was associated with a significantly longer postponement of delivery (mean gestational age 36.4 weeks vs. 35.2 weeks for atosiban).
- Neonatal morbidity and birth weight were comparable between the two groups.
Conclusions:
- Atosiban exhibits superior efficacy in the short-term (48 hours) management of preterm labor.
- Nifedipine may offer a benefit in prolonging the latency period for delivery, which could be advantageous for fetal maturation.
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