A 68-year-old man who smokes 20 cigarettes a day has an ultrasound of the abdomen for vague right upper quadrant discomfort. The gallbladder is normal, but the infrarenal abdominal aorta measures 4.6 cm in maximum diameter. He has no abdominal or back pain, and the aorta is not tender. His blood pressure is 152/90 mmHg and his father died of a "burst artery in the stomach" at 70.
Which one of the following is the most appropriate management of the aortic finding?
Keep going — a set of ten like this one, one at a time.
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