Abstract
ObjectiveTo compare levonorgestrel (LNG) 52-mg intrauterine system (IUS) expulsion rates with fast-track (≤3 days) or delayed (2–4 weeks) insertion following mifepristone and misoprostol medical abortion. Study designIn this pilot trial, we randomized 108 women at ≤63 days’ gestation to fast-track (n=55) or delayed (n=53) insertion. Follow-up visits occurred at 2–4 weeks, 3 months and 1 year. We assessed total and partial expulsion at 3 months and 1 year, adverse effects and bleeding profiles. ResultsWe had follow-up data at 3 months and 1 year for 41 (74.5%) and 37 (69.8%) women in the fast-track group and 31 (56.4%) and 28 (52.8%) women in the delayed group. By 3 months, expulsion occurred in six (12.5%) women after fast-track and one (2.3%) woman after delayed insertion [risk ratio (RR) 5.50, 95% confidence interval (CI) 0.69–43.90]; most (n=5) of these were partial expulsions in the fast-track group. By 1 year, expulsion had occurred in seven (14.6%) and five (11.5%) women in the fast-track and delayed groups, respectively (RR 1.28, 95% CI 0.44–3.75). We found no differences in rates of vacuum aspiration, residual tissue, infection and bleeding or bleeding patterns within 3 months of insertion. ConclusionFast-track insertion of the LNG 52-mg IUS after medical abortion is feasible but may result in higher expulsion rates compared to delayed insertion. Due to lack of statistical power and high lost-to-follow-up rates, we were unable to fully address this question. ImplicationsFast-tract initiation of LNG 52-mg IUS contraception after medical abortion is feasible. It results in higher expulsion rates than delayed insertion but may improve postabortal intrauterine contraception uptake.
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