8 doctors weighed in:
What is a normal diameter for the renal artery?
8 doctors weighed in

Dr. Tarek Naguib
Internal Medicine - Nephrology & Dialysis
5 doctors agree
In brief: Variable
The exact diameter is not the issue since many people have small arteries with no problems.
The problem usually is in the stenosis i.e. Constricted area. More than 60% stenosis (narrowing) is considered severe. However, severity by itself is not the only reason to do intervention (put a stent) since if the kidney function, bp, potassium are stable with no resistant edema observation only is chosen.

In brief: Variable
The exact diameter is not the issue since many people have small arteries with no problems.
The problem usually is in the stenosis i.e. Constricted area. More than 60% stenosis (narrowing) is considered severe. However, severity by itself is not the only reason to do intervention (put a stent) since if the kidney function, bp, potassium are stable with no resistant edema observation only is chosen.
Dr. Tarek Naguib
Dr. Tarek Naguib
Thank
1 comment
Dr. Andris Kazmers
Renal arteries typically range range from 4-7 mm, most commonly 5-6. When there are multiple arteries they can be smaller. Size is important regarding the rate of re stenosis after angioplasty and stenting with larger renal arteries having lower incidence of re stenosis.
Dr. Bennett Werner
Internal Medicine - Cardiology
In brief: Highly variable
See: http://www.
Auntminnie.Com/index.Aspx?Sec=ser&sub=def&pag=dis&itemid=76238 the mean maximum diameter is 7 mm.

In brief: Highly variable
See: http://www.
Auntminnie.Com/index.Aspx?Sec=ser&sub=def&pag=dis&itemid=76238 the mean maximum diameter is 7 mm.
Dr. Bennett Werner
Dr. Bennett Werner
Thank
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