Non-efflux as a factor in vesicoureteral reflux

A prospective study was begun to determine the role of non-efflux as a factor in the etiology of vesicoureteral reflux. Fifteen patients who had had 1 kidney removed for reasons other than reflux were available for study. Voiding cystourethrograms were done in all 15 cases to ascertain whether the remaining defunctionalized ureter was subject to reflux. In no instance was reflux demonstrated into the non-effluxing ureter.