A 42-Year-Old Man Comes to His Primary Care Physician Due

A 42-year-old man comes to his primary care physician due to daytime sleepiness.  He often falls asleep during meetings and while watching television and has even fallen asleep while driving.  The patient does not feel refreshed when waking and has occasional morning headaches.  He has not had abnormal dreams or visual hallucinations when falling asleep or on waking.  The patient has no significant past medical history and is a lifetime non-smoker.  He drinks 2 or 3 beers on Friday nights.  Blood pressure is 148/100 mm Hg and pulse is 78/min and regular; BMI is 32 kg/m².  Cardiopulmonary examination shows no abnormalities.  Arterial blood gas analysis is normal.  What is this patient's most likely diagnosis?

A) Central sleep apnea
B) Narcolepsy
C) Obesity hypoventilation syndrome
D) Obstructive sleep apnea
E) Primary insomnia
F) Restless leg syndrome

Correct Answer:

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