Key clinical point: Pregnancy rates were low following placement of an IUD for emergency contraception, including among women who resumed intercourse within days of IUD placement without backup contraception.
Major finding: No pregnancies were reported among 138 women who received levonorgestrel IUS or among 148 who received copper IUDs who reported intercourse within 7 days of placement, regardless of use of backup contraception.
Study details: The data come from a secondary analysis of 518 participants in a randomized controlled trial of IUDs for emergency contraception; participants received a 52 mg levonorgestrel intrauterine system (IUS) or 380 mm2 copper IUD.
Disclosures: The study was supported in part by the Eunice Kennedy Shriver National Institute of Child Health and Development, the University of Utah Population Health Research (PHR) Foundation, with funding in part from the National Center for Research Resources and the National Center for Advancing Translational Sciences of the National Institutes of Health. The Division of Family Planning in the University of Utah's Department of Obstetrics and Gynecology receives research funding from Bayer Women's Health Care, Merck & Co. Inc., Cooper Surgical, Sebela Pharmaceuticals, Femasys, and Medicines 360. Lead author Dr. Fay had no financial conflicts to disclose.
Source: Fay KE et al. Contraception. 2021 Jun 21. doi: 10.1016/j.contraception.2021.06.011.