Cystometry: unstable bladder and urinary tract infection.

In order to study the effect of urinary infections upon the incidence of bladder instability during cystometric evaluation, 15 women underwent cystometry during the course of significant bacteriuria (10(5) organisms/ml) and again 2 weeks after treatment. The pre-treatment incidence of bladder instability (53%) dropped by 50% following treatment of the infection but other cystometric measurements remained unchanged. Urinary tract infections must be treated adequately before treating bladder instability.