Predictors of acute urinary retention after transurethral resection of the prostate: a retrospective chart audit.

A chart audit of patients who had undergone a transurethral resection of the prostate established that 15.4% of 156 patients had postoperative acute urinary retention (AUR). Pre-operative prostate size, clot retention, and pre-operative urinary tract infection distinguished men at risk for post-operative AUR.