skip to main content

Ondansetron QT risk — GPhC CRA MCQ

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

ModerateGastrointestinal TherapeuticsOndansetron QT riskGPhC CRA

A patient with congenital long QT syndrome is prescribed ondansetron and also takes citalopram with hypokalaemia from diarrhoea. What is the most appropriate action?

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

Reveal the answer and explanation

Correct answer: D — Contact the prescriber before supply

Ondansetron can prolong the QT interval, and the patient's risk factors increase concern. This makes contact the prescriber before supply the single best answer in this scenario. The other options would either miss the key safety issue, delay appropriate review, or fail to meet the relevant clinical or professional requirement.

Reference: BNF interactions