title: Urodynamic evaluation of ileal conduit function.
abstract: Bilateral hydroureteronephrosis following ileal conduit urinary diversion is not uncommon. It may be owing to ureteroileal stenosis, stomal stenosis or a poorly compliant ileal conduit. The standard evaluation of stoma size, conduit residual urine and a loopogram often fail to allow determination of the cause of ureteral dilatation. In addition to these standard tests, we have used conduit urodynamics to study conduit function with a triple lumen urodynamic catheter to measure simultaneously conduit pressure proximal and distal to the fascia during filling under fluoroscopy. In 4 control patients with normal upper tracts who were studied with this technique conduit leak point pressures ranged from 5 to 20 cm. water pressure. Six patients with bilateral hydroureteronephrosis were studied to evaluate conduit function. We found abnormalities in 5 patients, including functional stomal stenosis in 2, an atonic loop in 1, segmental obstruction in 1 and a high pressure noncompliant distal segment in 1.
mesh_terms: D000368:Aged; D004108:Dilatation, Pathologic / Q000175:diagnosis; D005260:Female; D006801:Humans; D006869:Hydronephrosis / Q000175:diagnosis*; D007082:Ileum / Q000601:surgery; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000175:diagnosis*; D011312:Pressure; D014513:Ureter / Q000473:pathology; D014547:Urinary Diversion; D014563:Urodynamics