Urinary output is severely reduced when the renal arterial pressure decreases below what level?
a. 75 mm Hg
b. 85 mm Hg
c. 95 mm Hg
d. 105 mm Hg
ANS: A
Although urinary output stays fairly constant over a wide range of arterial pressures, it is severely reduced if the renal arterial pressure drops below 75 mm Hg.
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