Randomized, double blind, placebo controlled comparison of ritodrine and hexoprenaline for tocolysis prior to external cephalic version at term.
External cephalic versions in the study period were performed in a double blind design by 2 experienced practitioners. Sixty-three patients were allocated to treatment with either placebo, ritodrine or hexoprenaline. The main outcome measure studied was successful completion of external cephalic version. Hexoprenaline, but not ritodrine, was statistically more likely to be associated with successful version than placebo (p = 0.04 versus p = 0.22).
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Department of Obstetrics and Gynaecology, Chinese University of Hong Kong, Shatin, New Territories.
Chung
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Rogers
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Ming
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D000328:Adult; D016009:Chi-Square Distribution; D004311:Double-Blind Method; D005260:Female; D006594:Hexoprenaline / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D007262:Infusions, Intravenous; D007275:Injections, Intravenous; D010298:Parity; D011247:Pregnancy; D012312:Ritodrine / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D015145:Tocolysis / Q000379:methods*; D016896:Treatment Outcome; D014710:Version, Fetal
D006594:Hexoprenaline; D012312:Ritodrine