[Urinary system as a primary source of bloodstream infection].

The aim of this study was the determinantion of the appearance of urosepsis in patients in the Department of Nephrology Hypertension and internal Diseases, Dialysis Unit, Department of General, Oncologic and Pediatric Urology and Department of Transplantology and Surgery of University Hospital nr 1 of dr. A. Jurasza in Bydgoszcz. In the period of 2006-2008, total 233 isolates were obtained from positive blood culture and 28.8% of these was also related to urinary tract infection. The majority of cases of urosepsis was observed in urologic and transplantologic wards. Among investigated strains, the most frequency isolated species was E. coli. All Enterobacteriaceae strains examined in our study were susceptible to imipenem, the highest rate of resistance was found for ampicillin, six isolates was producing extended-spectrum beta-lactamases and four-AmpC beta-lactamases. Among P. aeruginosa strains there was no resistance to netilmicin and one or two isolates was producing AmpC beta-lactamases or ES L, respectively.