A Sudden Decline in Blood Pressure to 80/45 Mm Hg

Question

A sudden decline in blood pressure to 80/45 mm Hg is most apt to
A) increase GFR.
B) increase glomerular filtration.
C) cause oliguria.
D) cause hematuria.

Accepted Answer

A sudden decline in blood pressure can cause decreased renal perfusion, leading to a decrease in urine output (oliguria). This can occur due to vasoconstriction of the renal arterioles in response to diminished blood flow. A decrease in blood pressure is also likely to decrease both GFR and glomerular filtration as less blood is being filtered through the kidneys. Hematuria, or blood in the urine, is not likely to occur from a sudden drop in blood pressure alone.