Development of nosocomial and iatrogenic urinary tract infections (UTI) following urological interventions. A prospective clinical study.

: Development of nosocomial and iatrogenic UTI was investigated over 3 months period of time. Included were 140 patients following 228 instrumentations or endoscopical or surgical interventions. Of these 84 were carried out under antimicrobial medication. 30 UTIs developed 1-8 days after the various procedures (= 13.2%): 10% after TUR-B, 14% after TUR-P and ureteral instrumentation, 16% following cystoscopy and catheterisation. No significant difference was observed between: Males and females, patients with or without antimicrobial medication, younger and older patients and after long or short procedures. Indwelling catheters remain sterile for 3 days. Though antimicrobial prophylaxis did not significantly influence the generally low rate of infection it appeared as a trend that the elderly patient who requires repeated interventions and who suffers from additional diseases as diabetes, consuming tumours and renal insufficiency may benefit from medication.