Comparison of isosorbide mononitrate and misoprostol for cervical ripening in termination of pregnancy between 8 and 12 weeks: a randomized controlled trial.
Author(s): Duhan N, Gupta S, Dahiya K, Sirohiwal D, Rohilla S
Affiliation(s): Department of Obstetrics and Gynecology, Pt. B.D. Sharma Postgraduate Institute of Medical Sciences, H. No. 6/9J, Medical Campus, Rohtak 124001, Haryana, India. nkadian@gmail.com
Publication date & source: 2011-06, Arch Gynecol Obstet., 283(6):1245-8. Epub 2010 Jun 13.
Publication type: Comparative Study; Randomized Controlled Trial
AIM: The present study was undertaken to compare the efficacy of isosorbide mononitrate (IMN) and misoprostol for cervical ripening in termination of pregnancy between 8 and 12 weeks. MATERIALS AND METHODS: This prospective randomized single blind study enrolled 40 women with singleton pregnancy seeking surgical termination of pregnancy between 8 and 12 weeks of gestation. They were divided into two groups--group I received IMN 40 mg while group II received misoprostol 40 mg vaginally, 3 h prior to suction and evacuation. All women were monitored for effects of cervical ripening and adverse effects. RESULTS: The mean sizes of dilators that could be negotiated without any resistance was 5.9 +/- 1.33 in group I and 8.6 +/- 0.94 in group II (p < 0.001, 95% CI 0.58, 0.41). The mean dilator sizes at which resistance was first encountered was 6.9 +/- 1.37 in group I and 9.9 +/- 1.23 in group II (p < 0.001, 95% CI 0.60, 0.54). The mean blood loss was 61.5 +/- 13.86 ml in group I and 36.25 +/- 12.80 ml in group II (p < 0.001, 95% CI 6.07, 5.63). Headache was the most common adverse effect seen with IMN use. CONCLUSION: The results show that IMN has a definite role and better safety profile than misoprostol in first trimester cervical ripening, although misoprostol is more effective and causes less blood loss.
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