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Emergency contraception — CCFP MCQ

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ModerateWomen's health/OB/GYNEmergency contraceptionCCFP

A 29-year-old woman presents 36 hours after condom failure. Her last menstrual period was 12 days ago, cycles are regular, and she takes no medication. She wants the most effective emergency contraception and would welcome ongoing contraception. What would you advise this patient?

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Reveal the answer and explanation

Correct answer: DOffer a copper intrauterine device and discuss ongoing contraception

Explanation lettering: B = shown as A · E = shown as B · D = shown as C · C = shown as D · A = shown as E

The correct answer is C. The copper intrauterine device is identified in the Canadian Contraception Consensus as the most effective emergency contraceptive method and is effective when inserted within 7 days of intercourse. This patient is at 36 hours—well within that window. Additionally, she explicitly wants ongoing contraception, and the copper IUD provides dual benefit: emergency contraception with >99% efficacy and 10+ years of continuous protection. Levonorgestrel (A) is less effective (~60–94%) and does not provide ongoing contraception. Delaying until pregnancy test positivity (B) is contraindicated: it misses the window for emergency contraception and is not evidence-based. Combined oral contraceptive pills (D) were used historically (Yuzpe regimen) but are no longer first-line in Canada since levonorgestrel became available. Statement E is false: emergency contraception is effective up to 5 days for hormonal methods and 7 days for IUD.

Reference: Society of Obstetricians and Gynaecologists of Canada. Canadian Contraception Consensus (Part 1 of 4). Journal of Obstetrics and Gynaecology Canada, 2015. Available at https://pubmed.ncbi.nlm.nih.gov/26606712/