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COPD-OSAHS overlap syndrome — SCE Respiratory MCQ

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HardSleep MedicineCOPD-OSAHS overlap syndromeSCE Respiratory

A patient remains sleepy after adequate treatment of obstructive sleep apnoea. Sleep logs confirm sufficient sleep and sedating medicines have been stopped. Which investigation is required before diagnosing narcolepsy?

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Correct answer: B — Overnight polysomnography followed by a multiple sleep latency test

Narcolepsy assessment requires exclusion of insufficient sleep and untreated sleep disorders, followed by supervised overnight polysomnography and a next-day multiple sleep latency test. The sequence documents adequate preceding sleep and identifies sleep-onset REM periods while reducing false-positive interpretation.

Reference: https://www.brit-thoracic.org.uk/quality-improvement/guidelines/