[Dysfunction of the contractile capacity of the detrusor muscle in post-prostatectomy urinary retention]

We report on 23 consecutive patients with urinary retention following prostatectomy for benign prostatic hypertrophy. The patients were clinically and urodynamically evaluated. Urodynamic work-up included flowmetry, cystomanometry, detrusor pressure-micturition flow test, and videocystography. The involvement of detrusor contractility in urinary retention was observed in 60.87% of the cases and was ascribable to lower urinary tract obstruction in 39.19%. These data permitted instituting correct treatment.