THE USE OF LASER BEAM IN UROLOGY ( 5TH REPORT )

-INFLUENCE OF Nd: YAG LASER RADIATION TO THE WALL OF CANINE URINARY TRACT-

Abstract

Change of canine bladder wall was studied macroscopically and microscopically after radiation of CW Nd: YAG laser.
Laser output used was ranged from 18 to 72W. Radiation time was 2 or 4 sec. The distance between bladder mucosa and the tip of optical fiber were 0, 1 and 2mm. Experiments were performed on 1) extracted bladder and ureter immersed in the saline; 2) bladder opened surgically and filled with saline, which was removed immediately or 3 days after radiation.
Seventy-two W., 2 sec radiation makes no perforation on the bladder wall. Perforation was seen when laser power exceeded 36W, 4sec (in vitro).