Cases of rupture of urinary bladder, cystectomy for carcinoma of the bladder or urethra and extrophy of urinary bladder are all important conditions in which urinary diversions is recommended. Many surgeons in madical field as well as Veterinaians have had tried and reported various corrective surgical procedures. In the past several attempts have been made in which the bladder was excised and ureters were implanted in colon (large intestine). But satisfactory results were not obtained because the bacterial count in the colon is much higher which resulted in ascending infection towards kidneys and caused Hydro-nephritis, pylonephritis or gastro-intestinal disturbances (1979, Boree).

Beside these complications, the advantage of this surgery was that the animal would be cured from all those diseases of urinary bladder or urethra which do not respond to other form of therapy. However, the aforementioned problems of pyelonephritis etc. and the life long cover of antibiotics to combat them. Thus compels the clinician to think of some better procedures, a new project comprising ureterojejunostomy and ureterogastrostomy was designed.

Eighteen healthy dogs of both sexes were used for this experimental implantation of ureters in the stomach (pyloric antrum) into the mid and distal jejunum. The urinary bladder was emptied by gentle digital pressure and excised completely after amputating the ureters obliquely down to the trigone area. The cut ends of the ureters were wrapped in sponge moistened with saline. An entrotomy incision about 5 ems long was given on the selected segment of mid or distal jejunum 10 ems cranial to this incision a small nick in between the mesenteric and antimesenteric border was made going through the first three layers. Through the nick 1.5 cm submucosal tunnel was created going towards the entrotomy incision. The ureter was pulled into the lumen of the intestine through this tunnel. The cut end of the ureter was spatulated and sutured to the intestinal mucosa using 3/0 prolyene simple interrupted sutures. The other ureter was similarly implanted on the other side of the jejunum. With the help of a probe the patency of ureter was checked and entretomy incision was closed using 2/0 chromic catgut simple interrupted crushing sutures. Finally the abdomen was closed in routine manner.

In the dogs of group No.3 the ureters were implanted in the least vescular part of the pyloric antrum through gastrotomy incision using the same procedure explained above.
It was concluded on the basis of this study that:

1) Pressure within the jejunum and stomach interfered with drainage and forced air, food particles and organisms up to the renal pelvis.

2) As the stomach and jejunum were acting as reservoir and the urine was in contact with the wall for a longer period, reabsorption of urinary solutes occured and resulted in azotemia.

3) The typical changes were hyperchloraemic acidosis with potassium depletion and this occured in every patient with uretro-jej unostomy and uretero-gastrostomy diversion.

4) When severe the patient developed loss of appetite, weakeness, thirst, listless, coma and died.