Vesicoureteric reflux after ureteric dilatation: an experimental study

ABSTRACT

The present study was designed to evaluate the incidence of delayed [4-6 months] vesicoureteral reflux after dilating the terminal ureter of dogs to 2, 3 and 4 folds the normal calibre [4F]. It was found that 2-fold dilatation is harmless, with no incidence of vesicoureteral reflux, while the 3-fold dilatation carries an incidence of 28.5% of delayed reflux. Four-fold dilatation carries the hazards of 50-66.6% incidence of persistent vesicoureteral reflux using either balloon or teflon dilators, respectively. The implication of these findings for clinical practice are discussed