An age-related investigation of urinary tract symptoms and infection following urodynamic studies.

One hundred and thirty-nine patients undergoing urodynamic investigation were studied. Urine samples taken at the time of the test and at 72 hours afterwards were cultured and data on symptoms following the test were collected. The overall infection rate was 15.8%. Men and women aged over 70 years were no more likely than younger subjects to become infected. A high residual urine volume was not associated with an increased risk of infection. The only clinical feature associated with infection following the test was an increase in incontinence. These findings were all in contradiction to previous studies on smaller numbers of patients.