AN ANGIOGRAPHIC STUDY OF THE RENAL CIRCULATION AFTER THE PARTIAL NEPHRECTOMY

THE 5TH REPORT FOR THE STUDY OF PARTIAL NEPHRECTOMY

Abstract

An experimental angiographic study was made to determine the renal circulation of 25 dogs after the left partial nephrectomy with intact right kidney.
The angiograms made at two hours after release of the clamp which occluded the renal vessels, all showed obvious constriction of the renal and intrarenal arteries of the left kidney. The nephrograms made at 1 hour to 24 hours after the operation all showed some cortical ischemia in the both kidneys, but the right kidney showed slighter ischemia than that of the left kidney. These changes were gradually restored to regain their normal conditions from the 7th to 10th post-operative days. When the renal pedicle was clamped, the changes were more marked than when the renal pedicle was treated with finger compression.
On the other hand, similar changes of the renal circulation were seen even when the renal vessels were occluded with a clmp without resecting the renal parenchyma. This fatc indicates that the changes of the renal circulation after partial nephrectomy are chiefly due to clamping the renal pedicle during the resection of the renal parenchyma.
Then, in the partial nephrectomy, the renal pedicle should be terated carefully to minimize the changes of the renal circulation which causes the post-operative renal damage.