A 78-Year-Old Man Is Being Evaluated for Headaches That Are

question 3

Multiple Choice

A 78-year-old man is being evaluated for headaches that are relieved by over-the-counter acetaminophen.  He takes no other medications and is a lifelong nonsmoker.  The patient's blood pressure is 180/70 mm Hg and pulse is 75/min and regular.  During a prior office visit, blood pressure was 175/68 mm Hg.  Physical examination shows an S4 but is otherwise unremarkable.  CT scan of the head reveals no significant abnormalities.  Which of the following age-related changes best explains this patient's blood pressure readings?

• A)Decreased diameter of the aortic lumen
• B)Decreased stroke volume
• C)Increased arterial collagen deposition
• D)Increased renal arterial resistance
• E)Increased sympathetic tone

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