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Meta-Analysis
. 2011 Oct;118(4):941-9.
doi: 10.1097/AOG.0b013e31822f3c7b.

Misoprostol in operative hysteroscopy: a systematic review and meta-analysis

Amanda Selk  1 , Jamie Kroft
Affiliations
Meta-Analysis

Misoprostol in operative hysteroscopy: a systematic review and meta-analysis

Amanda Selk et al. Obstet Gynecol. 2011 Oct.

Abstract

Objective: To estimate the benefits and harms of misoprostol use for cervical dilation in patients undergoing operative hysteroscopy.

Data sources: We searched MEDLINE, EMBASE, and the Cochrane Central Register of Controlled Trials (from inception to February 2011). We also searched trial registries, other sources of unpublished or gray literature, and the reference lists of retrieved studies.

Methods of study selection: Randomized controlled trials (RCTs) of patients undergoing operative hysteroscopy that used misoprostol compared with placebo were included.

Tabulation, integration, and results: The two coauthors independently screened search results for inclusion, assessed trials for methodologic quality, extracted data, and resolved disagreements through discussion. A total of seven RCTs with 568 patients met inclusion criteria. The quality of evidence for all outcomes was low. The pooled estimate did not rule out a beneficial effect of misoprostol on cervical dilation (six studies, 506 participants; mean difference 0.85 mm, 95% confidence interval [CI] -0.58 to 2.27). The pooled estimate did not rule out a beneficial effect of misoprostol on surgical complications (cervical lacerations, uterine perforations, and false passages [seven studies, 545 patients, pooled relative risk [RR] 0.65, 95% CI 0.19-2.26]). There was an increase in side effects (cramps, vaginal bleeding, nausea, and diarrhea) in the misoprostol group (four studies, 374 patients; RR 4.28, 95% CI 1.43-12.85). The number needed to harm to have one patient with preoperative vaginal bleeding was six, for diarrhea was seven, and for nausea was 13.

Conclusion: This review did not rule out a beneficial effect of misoprostol on cervical dilation or surgical complications. There was an increase in side effects in operative hysteroscopy patients treated with misoprostol. Current evidence does not support the routine use of preoperative misoprostol in operative hysteroscopy.

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