What problems does renal artery stenosis typically cause?

Hypertension: Reduced renal blood flow causes the kidney to produce excess renin which causes hypertension. Most cases of stenosis can be managed by interventional radiologists placing a stent.

Hypertension: Renal artery stenosis usually causes elevation of the blood pressure and can result in kidney failure, both directly and indirectly. Taking ace inhibitors or angiotensin receptor blockers can worsen renal function if you have renal artery stenosis.