Hospital urinary tract infections in surgical patients.

The subject of the present study was evaluation of the prevalence of the urinary tract infections (UTI) in surgical patients, as well as determination of the type and susceptibility of bacterial flora responsible for the UTI. The UTI constituted 21% of all hospital infections in the surgical ward and involved 2.3% of all operated patients. The main etiological factor was Gram-negative bacteria, which were responsible for 82.3% of infections. These infections were characterised by high susceptibility to carbapenems, the 3rd generation of cephalosporins, and fluorochinolons, as well as marked resistance to nitrofurantion derivatives, aminoglycosides, second generation of cephalosporins, and amoxicillin with clavulanic acid. Over 21% of Gram-negative bacteria produced beta-lactamase of extended spectrum (ES beta L). Moreover, 94% of recognised hospital UTI were associated with previous catheterisation of the urinary bladder.