Problem: A 73-year-old female patient is in your office for her annual physical examination. On examination, she has trouble reading instructions, answering questions, and staying awake during the interview. Her current medications include aspirin, atorvastatin, lisinopril, and oxycodone. Which of the following factors would most likely account for her presenting features and impact her driving safety the earliest? Hearing loss Visual acuity Potentially driver-impairing (PDI) drugs Obstructive sleep apnea (OSA)