Emergency contraception with the copper intrauterine device (Cu-IUD) can be inserted up to how many days after unprotected intercourse, and its failure rate is approximately:

• A 48 hours; 0.5%
• B 72 hours; 1%
• C 7 days; 0.5%
• D 5 days (120 hours); <0.1% ✓

Explanation

The copper IUD is the most effective form of emergency contraception, with a failure rate of <0.1% (approximately 1 in 1000), and can be inserted up to 5 days (120 hours) after unprotected intercourse. It can then continue as long-term contraception. Levonorgestrel EC (1.5 mg) is effective up to 72 hours (less effective 72–120 hours). Ulipristal acetate is effective up to 120 hours but only as an oral agent.

Reference: Shaw's Textbook of Gynaecology, 17th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.