How does acute unilateral renal obstruction predispose people to hypertension?
A) The hydronephrosis that develops prevents any further blood from entering the kidneys,which results in an increase the systemic blood volume.
B) The reduced perfusion of the affected kidney activates the renin-angiotensin-aldosterone system,which causes constriction of peripheral arterioles.
C) The pain resulting from the renal obstruction stimulates the autonomic nervous system,causing vasoconstriction of peripheral arterioles.
D) The renal obstruction prevents the usual loss of sodium through the urine,causing retention of sodium and water,which increases blood volume.

Question

Quizplus · Accepted Answer

The reduced perfusion of the affected kidney can stimulate the release of renin, which activates the renin-angiotensin-aldosterone system (RAAS). This results in the production of angiotensin II, which causes vasoconstriction of peripheral arterioles, leading to an increase in systemic vascular resistance and ultimately hypertension.

How Does Acute Unilateral Renal Obstruction Predispose People to Hypertension