Częstość izolacji i lekooporność szczepów Escherichia coli wyosobnionych z krwi
[Frequency of isolation and susceptibility to antibiotics of Escherichia coli strains isolated from blood]

Streszczenie.

Badanie dotyczyło 236 szczepów Escherichia coli izolowanych z krwi od chorych Szpitala Uniwersyteckiego nr 1 im. dr. A. Jurasza w Bydgoszczy oraz Wojewódzkiego Szpitala Obserwacyjno-Zakaźnego im. T. Browicza w Bydgoszczy w latach 2007-2010. Stwierdzono, że wśród pałeczek z rodziny Enterobacteriaceae wyosobnionych z krwi największą grupę stanowiły E. coli (45,1%). Odnotowano wysoki odsetek badanych szczepów opornych na ampicylinę (70,7%), piperacylinę (43,9%), tetracyklinę (42,8%) i doksycyklinę (38,8%).

Abstract.

The aim of our study was the analysis of Escherichia coli strains obtained from patients of University Hospital No 1 of dr A. Jurasz Collegium Medicum of L. Rydygier in Bydgoszcz Nicolaus Copernicus University in Toruń and State Infectious Diseases Observatory Hospital of T. Browicz in Bydgoszcz, between 2007 and 2010. Among all microorganisms isolated from blood was 8,7% E. coli strains and 45,1% of all rods from Enterobacteriaceae family. Number of E. coli isolations from positive blood samples was: 64 in 2007, 69 in 2008, 77 in 2009 and 26 in the first half of 2010 year. The highest percentage of E. coli strains were obtained from patients of the Transplantology and Surgery Clinic (16,1%), the Nephrology and Internal Diseases Clinic with the Dialysis Centre (14,0%), the Pediatric, Hematology and Oncology Clinic (13,6%) and the Anesthesiology and Intensive Care
Clinic (13,6%). All analysed strains were susceptible to carbapenems, amikacin and tygecycline. The highest percentage of resistant strains were observed to ampicillin (70,7%), piperacillin (43,9%), tetracycline (42,8%) and doxycycline (38,8%). During four years of study 4 (6,3%), one, three and two E. coli strains with ESBL were isolated, respectively.