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Korean Journal of Obstetrics & Gynecology 2002;45(11):1991-1995.
Published online November 1, 2002.
A Comparison of Efficacy and Safety of Ritodrine hydrochloride alone and Combined Treatment with Magnesium sulfate in the Management of Preterm Labor.
Young Ah Kim, Hee Suk Kang, Soon Ha Yang, Jong Hwa Kim
Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
This study was designed to compare the efficacy and safety of the ritodrine hydrochloride alone with combined treatment with magnesium sulfate in the management of preterm labor. METHODS: One hundred thirty three singleton pregnancies with preterm labor were treated with either ritodrine hydrochloride (n=97) or ritodrine hydrochloride and magnesium sulfate (n=36). The principal outcomes assessed were delay of duration, maternal-fetal side effects, and fetal outcome. RESULTS: The treatment to delivery time was not statistically different between the ritodrine group and the combined magnesium sulfate group (mean+/-SD 10.7+/-13.0 days, 8.6+/-9.1 days, respectively). The proportion delivered after 48 hours, 72 hours, or 7 days was also not statistically different between two groups (29% vs. 22%, 40% vs. 39%, 60% vs. 64%, respectively). No statistical difference was found in the side effects of treatment or fetal outcomes. CONCLUSION: There was no significant difference in efficacy and safety between ritodrine hydrochloride and combined treatment with magnesium sulfate in the management of preterm labor.
Key Words: ritodrine hydrochloride, magnesium sulfate, preterm labor

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