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  • Title: Urodynamic evaluation of ileal conduit function.
    Author: Knapp PM, Konnak JW, McGuire EJ, Savastano JA.
    Journal: J Urol; 1987 May; 137(5):929-32. PubMed ID: 3573186.
    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.
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