A Patient Who Has Excessive Daytime Sleepiness Tells the Practitioner

A patient who has excessive daytime sleepiness tells the practitioner that he goes to bed and gets up at the same time each day but still wakes up tired. The spouse reports that the patient snores so much she has had to move to another bedroom. The patient is otherwise healthy and does not take any medications or drink alcohol. Which diagnostic test may be performed for this patient?

A) Full overnight polysomnography (PSG)
B) Multiple sleep latency test (MSLT)
C) Overnight pulse oximetry
D) Unattended out of center sleep testing (OCST)