Despite reviewing 39 eligible trials, few firm conclusions could be reached because of the multiple comparisons considered, the small size of individual trials, and their low quality. Whether or not to use a particular policy is usually a trade-off between the risks of morbidity (especially infection) and risks of recatheterisation.
A randomized trial comparing bladder infusion with standard catheter removal after transurethral resection of the prostate.
To examine the effect of bladder infusion before catheter removal on patients' readiness for discharge and the day of discharge after transurethral resection of the prostate (TURP).
                The study comprised 75 consecutive patients undergoing TURP who were randomized to either have their catheter removed in the standard manner (38 patients), or to undergo bladder infusion before a trial of voiding (ToV) on the second day after TURP (37 patients).
                In those undergoing bladder infusion, seven (19%) patients were discharged on the same day as their ToV, compared with five (13%) in the standard group. Of the 75 patients, 15 (68%) were discharged by the third day after TURP whether or not the bladder had been filled. In the infusion group, 23 (62%) were ready for discharge on the same day as their TOV, compared with only 14 (37%) in the standard group (P < 0.05).
                Bladder infusion before a ToV after TURP significantly increases the rate of readiness for discharge, allowing an early decision to discharge on the second day in a large proportion of patients.