An 18-year-old patient weighing 76 kg requires a tablet form of emergency contraception 64 hours after unprotected intercourse. What would you give?

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Study for the Foundation Year Pharmacy – Clinical Practice Test. Prepare with detailed questions, step-by-step explanations, and test format insights. Enhance your readiness and confidence!

Multiple Choice

An 18-year-old patient weighing 76 kg requires a tablet form of emergency contraception 64 hours after unprotected intercourse. What would you give?

Explanation:
At 64 hours after unprotected intercourse, the goal is to choose a tablet that remains highly effective within the five-day window and is not significantly undermined by higher body weight. Levonorgestrel, while usable up to 72 hours, becomes less reliable as BMI increases, and at a weight of 76 kg its efficacy is notably reduced. Ulipristal acetate, given as a single 30 mg dose, can be used up to five days after exposure and its effectiveness is less affected by body weight, making it more reliable in someone weighing 76 kg. The copper IUD is the most effective emergency method but is not a tablet, and mifepristone is not used for emergency contraception. Therefore, the best tablet option in this scenario is Ulipristal acetate.

At 64 hours after unprotected intercourse, the goal is to choose a tablet that remains highly effective within the five-day window and is not significantly undermined by higher body weight. Levonorgestrel, while usable up to 72 hours, becomes less reliable as BMI increases, and at a weight of 76 kg its efficacy is notably reduced. Ulipristal acetate, given as a single 30 mg dose, can be used up to five days after exposure and its effectiveness is less affected by body weight, making it more reliable in someone weighing 76 kg. The copper IUD is the most effective emergency method but is not a tablet, and mifepristone is not used for emergency contraception. Therefore, the best tablet option in this scenario is Ulipristal acetate.

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