A patient, Allen, was found to have severe arteriosclerosis of his renal arteries, which reduces renal blood flow. Which of these would be consistent with that condition?Multiple ChoiceBoth "Hypotension (low blood pressure)" and "Decreased vasomotor tone" are correct.Hypertension (high blood pressure)Decreased vasomotor toneHypotension (low blood pressure)Exaggerated sympathetic stimulation of the heart
Question
A patient, Allen, was found to have severe arteriosclerosis of his renal arteries, which reduces renal blood flow. Which of these would be consistent with that condition?Multiple ChoiceBoth "Hypotension (low blood pressure)" and "Decreased vasomotor tone" are correct.Hypertension (high blood pressure)Decreased vasomotor toneHypotension (low blood pressure)Exaggerated sympathetic stimulation of the heart
Solution
The correct answer would be "Hypertension (high blood pressure)".
Here's why:
Arteriosclerosis of the renal arteries means that these arteries have become hardened and narrowed. This reduces the blood flow to the kidneys. When the kidneys receive less blood, they respond by releasing hormones that stimulate the body to retain salt and water, which increases the volume of blood in the body. This, in turn, increases blood pressure.
Additionally, the kidneys release a hormone called renin, which leads to the production of angiotensin II. Angiotensin II is a potent vasoconstrictor, meaning
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