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Obstructive sleep apnea — USMLE Step 3 MCQ

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EasyAmbulatory Medicine / Primary CareObstructive sleep apneaUSMLE Step 3

A 51-year-old man has loud snoring, witnessed apneas, and daytime sleepiness. BMI is 36 kg/m2, neck circumference is 45 cm, and blood pressure is 146/88 mm Hg. He falls asleep while watching television. Cardiac and pulmonary examinations are normal. Which of the following is the most likely diagnosis?

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Correct answer: D — Obstructive sleep apnea

Obesity, loud snoring, witnessed apneas, and daytime sleepiness are classic for obstructive sleep apnea.

Reference: American Academy of Sleep Medicine OSA Guideline