[Risk of infection in instrumental and surgical urologic interventions with special reference to catheter drainage].

The risk of infection in instrumental and operative urological surgery is particularly high in the use of catheter drainage. Dependent on the duration of use of a fistula catheter or a transurethral catheter, infection of the urinary tract occurs in almost 100% of cases. The pathogens of hospital infection show a clearly increasing drug resistance. The occurrence of multiple resistances is remarkable. Furthermore, fluctuations in the range of pathogens can be detected. An increase of infection by Proteus and Klebsiella and a decrease of infections of the urinary tract with Escherichia coli and staphylococci have been observed. Prophylactic administration of chemotherapeutic agents cannot prevent the recurrence of iatrogenic infections of the urinary tract.