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Delirium investigation — DGM MCQ

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ModerateDeliriumDelirium investigationDGM

A 77-year-old woman presents with new confusion after starting diuretics for ankle swelling. She is drowsy and has postural dizziness. Blood pressure is 98/54 mmHg and mucous membranes are dry. Current medicines include furosemide and ramipril. What is the most appropriate assessment?

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Correct answer: C — Check renal function and electrolytes

Diuretic-related dehydration, renal impairment or electrolyte disturbance can precipitate delirium, so blood tests are appropriate. Amyloid imaging and dementia medication do not address acute illness, vestibular testing does not fit, and spirometry is not the main first-line test. Medication changes shortly before delirium often identify the reversible cause.

Reference: NICE CG103; BNF