> Date:          Wed, 6 Nov 1996 16:20:00 -0600
> Reply-to:      [log in to unmask]
> From:          "Lee Nix@CARDIAC" <[log in to unmask]>
> To:            flownet <[log in to unmask]>
> Subject:       renal collateral

> In response to the question regarding collateral supply to the kidney I
> got
> the following response from Beverley Ketel, the head of transplant
> surgery
> here at U. of Arkansas:
> 
> 
> Lee,
> 
> Should I answer the question?  There are small collateral vessels which
> can 
> keep the kidney "alive" but do not allow any significant kidney
> function. 
>  Occasionally we identify a kidney which has had a recent renal artery 
> occlusion and is still viable because of collaterals.  If the renal
> artery is 
> reconstructed the kidney sometimes functions again.  If the main artery
> is 
> occluded for too long no meaningful function returns to the kidney. 
> Gary 
> Barone has gotten one patient off dialysis by reconstructing both of her
> 
> occluded renal arteries.
> 
> Bev
>  ----------
> From: Lee Nix@CARDIAC
> To: Beverley Ketel, M.D.
> Subject: FW: RENAL ARTERY OCCLUSIONS
> Date: Tuesday, November 05, 1996 2:13PM
> Priority: High
> 
> Here is an interesting question for you from the peripheral vascular
> email
> system.  I wasn't aware that there were any collaterals for renal
> arteries.
>  
> Hello out there!
Dr. Benjamin is our renovascular surgeon, he just finished his 
fellowship at Bowman gray - the mecca for renal reconstruction.  He 
says that the kidney never really dies with a renal artery occlusion 
because of collateral flow.  We almost always detect flow from 
kidneys that have occluded renal arteries, which makes the study a 
challenge - the old is it occluded or is it me question. Flow is 
usually below 10cm/sec with a monophasic waveform. This is where 
kidney size and renal function come into play.

Gail - UMMS