100. A 55-year-old man is complaining of difficulty with hav…
100. A 55-year-old man is complaining of difficulty with having an erection. He explains he has erections sometimes at night or when he wakes up, and it has been a problem for about 6 months. He is married and denies any relational problems other than being tired often and not in the mood to engage in sexual intercourse. He has a history of hypertension and is taking an angiotensin-converting enzyme. He smokes 1 pack of cigarettes per day for 25 years. Initial diagnostic testing will include:
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