skip to main content

SSRI hyponatraemia — GPhC CRA MCQ

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

HardAdverse Drug Reactions and Drug SafetySSRI hyponatraemiaGPhC CRA

An 84-year-old woman started citalopram two weeks ago and now has confusion, falls and headache. She also takes bendroflumethiazide. What monitoring is required?

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

Reveal the answer and explanation

Correct answer: C — Check serum sodium urgently

SSRIs can cause hyponatraemia, particularly in older people and those taking diuretics. Confusion, falls and headache shortly after initiation are concerning. Serum sodium should be checked promptly and the prescriber informed.

Reference: BNF