Conduit and renal pelvic pressures after ileal and colonic urinary diversion in dogs.

In dogs pressures in the renal pelvis and the conduit were studied in nine ileal conduit urinary diversions with refluxing ureteroileal anastomosis and in seven colonic conduit urinary diversions with antireflux ureterocolonic anastomosis. In the non-diuretic state, increased pressure waves in the non-stomal obstructed ileal conduit were not transmitted to the renal pelvis. With diuresis, higher renal pelvic pressures were noted with both ileal conduit and the colonic conduit. With complete stomal obstruction in the ileal conduit, pressure waves in the conduit were readily transmitted to the renal pelvis. This was not present in the colonic conduits with the antireflux anastomosis.