If i wait too long to get a stent for my renal artery stenosis, what will happen to my kidneys?

Depends: Stenting of the renal arteries has been controversial. Definitely, no intervention needs to be considered if the narrowing is less than 60%. The setting where stenting has definitely been shown to be beneficial is when the kidney function is deteriorating and/or the kidney size is shrinking. Stenting doesn't always improve the blood pressure or kidney function- hence the controversy.

? Stenosis: Dont need stent unless significant stenosis and difficult to control hypertension. If you wait too long the kidney may not respond. Have your doctor do a renal artery doppler. If the resistive index too high stent may not help.

Renal artery stenosi: Depends on what is causing the RAS. I specialize in this so can do 2nd opinion. Most probably nothing as long as BP is controlled.