Levonorgestrel-releasing intrauterine device (LNG-IUD) for symptomatic endometriosis following surgery

Ahmed M Abou-Setta, Brett Houston, Brett L. Houston, Hesham Al-Inany, Hesham G Al-Inany, Cindy Farquhar
The Cochrane database of systematic reviews · 2013 · pp. CD005072 · doi:10.1002/14651858.cd005072.pub3 · PMID:23440798 · W2107300092
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Postoperative levonorgestrel-releasing intrauterine device insertion in women with endometriosis showed a reduced recurrence of painful periods compared to expectant management.

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Abstract

BACKGROUND: Various options exist for treating endometriosis, including surgical, medical, such as ovarian suppression, or a combination of these strategies. Surgical treatment of endometriosis aims to remove visible areas of endometriosis. The aim of medical therapy is to inhibit growth of endometriotic implants by induction of a hypo-estrogenic state. Treatment with a hormone-releasing intrauterine device, using levonorgestrel (LNG-IUD), has also been suggested. OBJECTIVES: To determine whether postoperative LNG-IUD insertion in women with endometriosis improves pain and reduces recurrence of symptoms compared with no postoperative treatment, postoperative insertion of a placebo, or postoperative therapy. SEARCH METHODS: The following databases were searched from inception to June 2012: Cochrane Menstrual Disorders and Subfertility Group Specialised Register of controlled trials, Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, PsycINFO, CINAHL, and the World Health Organization (WHO) International Clinical Trials Registry Platform. EMBASE was searched from 2010 to June 2012. The citation lists of relevant publications, review articles, abstracts of scientific meetings, and included studies were also searched. SELECTION CRITERIA: Trials were included if they compared women undergoing surgical treatment for endometriosis with uterine preservation and then randomised within three months to LNG-IUD insertion versus no postoperative treatment, placebo (inert IUD), or other treatment. Diagnostic laparoscopy alone was not considered suitable treatment. DATA COLLECTION AND ANALYSIS: Two review authors independently selected studies for inclusion and extracted data to allow for an intention-to-treat analysis. For dichotomous data, the risk ratio (RR) and 95% confidence interval (CI) were calculated using the Mantel-Haenszel random-effects method. For continuous data, the mean difference (MD) and 95% CI were calculated using the inverse variance random-effects method. MAIN RESULTS: Three randomised controlled trials were included. In two trials, there was a statistically significant reduction in the recurrence of painful periods in the LNG-IUD group compared with expectant management (RR 0.22, 95% CI 0.08 to 0.60, 95 women, I(2) = 0%, moderate strength of evidence). The proportion of women who were satisfied with their treatment was also higher in the LNG-IUD group but did not reach statistical significance (RR 1.21, 95% CI 0.80 to 1.82, 95 women, I(2) = 0%). The number of women reporting a change in menstruation was significantly higher in the LNG-IUD group (RR 37.80, 95% CI 5.40 to 264.60, 95 women, I(2) = 0%) but the number of women not completing the allocated treatment did not differ between groups (RR 0.66, 95% CI 0.08 to 5.25, I(2) = 43%).In one trial, women receiving LNG-IUD noted lower pain scores compared with women receiving gonadotrophin-releasing hormone agonists (MD -0.16, 95% CI -2.02 to 1.70, 40 women) but this did not reach statistical significance. AUTHORS' CONCLUSIONS: There is limited but consistent evidence showing that postoperative LNG-IUD use reduces the recurrence of painful periods in women with endometriosis. Further well-designed RCTs are needed to confirm these findings.

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Condition tags

dysmenorrheaendometriosis

MeSH descriptors

Contraceptive Agents, Female Dysmenorrhea Endometriosis Intrauterine Devices, Medicated Levonorgestrel Contraceptive Agents, Female Dysmenorrhea Endometriosis Endometriosis Female Gonadotropin-Releasing Hormone Gonadotropin-Releasing Hormone Humans Levonorgestrel Menstruation Menstruation Postoperative Care Postoperative Care Secondary Prevention

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