USMLE Step 2 CK – Obstructive Sleep Apnea (OSA)

 

USMLE Step 2 CK – Obstructive Sleep Apnea (OSA)

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Q1. A 52-year-old obese man presents with excessive daytime sleepiness and loud snoring. His wife reports episodes of apnea during sleep. What is the most likely diagnosis?

A. Central sleep apnea B. Obstructive sleep apnea C. Narcolepsy D. Insomnia

Q2. Which of the following physical exam findings is most associated with OSA?

A. Hyperresonant lungs B. Narrow oropharynx (Mallampati 3/4) C. Splenomegaly D. Clubbing

Q3. A patient with OSA most commonly complains of which symptom?

A. Hemoptysis B. Daytime sleepiness C. Chest pain D. Polyuria

Q4. Which feature strongly supports OSA diagnosis?

A. Morning fever B. Witnessed apneas during sleep C. Night sweats D. Weight loss

Q5. A patient wakes up at night gasping for air and has loud snoring. What is the underlying mechanism?

A. Brainstem failure B. Upper airway obstruction C. Lung fibrosis D. Cardiac failure