au-amc MCQ (SBA): Obstructive sleep apnoea

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MediumRespiratoryObstructive sleep apnoeaau-amcau-racp

A 58-year-old obese man with loud snoring and witnessed apnoeas undergoes overnight polysomnography, which shows moderate obstructive sleep apnoea (apnoea-hypopnoea index 25 events/hour) with significant daytime sleepiness. What is the most appropriate first-line treatment?

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