Pressure studies and dynamics of ileal conduits in children.

The pressures generated in the ileal conduits of 20 children and their relation to conduit ureteral reflux are investigated. The resting pressure in the ileal conduits was generally low but peaks of high pressure were observed occasionally. Reflux occurred mostly at low pressure. Whether reflux occurred at any one moment depended on the position of the peristaltic wave in the ureter at that time. There was no consistent relationship between the conduit pressures and deterioration of the upper renal tract.