gynecology and obstetrics
Emergency Contraception
Key Points
Oral methods of emergency contraception includeulipristalandlevonorgestrel; they are taken within 120 hours after unprotected intercourse. AcopperIUD, inserted within 5 days of unprotected intercourse, is also effective and can be left in place for long-term contraception. A 52-mglevonorgestrel-releasing IUD, inserted within 7 days of unprotected intercourse, is also effective. Pregnancy rates are 1.5% withulipristal, 2 to 3% with orallevonorgestrel, 0.1% with acopperIUD, and 0.3% with a 52-mglevonorgestrel-releasing IUD. Likelihood of pregnancy after hormonal emergency contraception depends on pregnancy risk without emergency contraception, time in the menstrual cycle that emergency contraception is taken, and BMI. 