A 32-year-old woman requests emergency contraception 60 hours after unprotected intercourse. She has no contraindications. The MOST effective method available is:

• A Levonorgestrel 1.5 mg oral (Plan B)
• B Ulipristal acetate 30 mg oral
• C Combined Yuzpe regimen (high-dose COC)
• D Copper intrauterine device insertion ✓

Explanation

Copper IUD is the most effective emergency contraception (>99% effective) and can be inserted up to 5 days after unprotected intercourse. Ulipristal acetate is more effective than levonorgestrel up to 120 hours and is not affected by body weight. Levonorgestrel is less effective beyond 72 hours and decreasing efficacy is seen with increasing body weight. At 60 hours, ulipristal is preferred if IUD is declined, but the copper IUD remains the single most effective option. The Yuzpe method is least effective with most side effects.

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

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.