skip to main content

DAPT duration post-MI — GPhC CRA MCQ

Instant feedback + full explanation. One question, done properly.

HardCardiovascular TherapeuticsDAPT duration post-MIGPhC CRA

A 63-year-old with stable angina uses sublingual glyceryl trinitrate and takes isosorbide mononitrate. He asks to buy sildenafil for erectile dysfunction and reports no recent angina episodes. What is the safest advice?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: E — Do not use sildenafil while nitrate therapy may be needed

Phosphodiesterase-5 inhibitors can markedly potentiate the hypotensive effect of nitrates. Sildenafil must not be used while regular or rescue nitrate treatment may be required; an arbitrary dose interval or dose reduction does not make the combination safe. The patient needs prescriber review of erectile-dysfunction and anti-anginal management rather than over-the-counter supply.

Reference: https://www.pharmacyregulation.org/students-and-trainees/pharmacist-education-and-training/registration-assessment