Antimicrobial Susceptibility Patterns of Enterococcus species Isolated from urinary tract infections

Abstract

Enterococci were frequently considered to be commensal organism and were ignored when isolated in clinical laboratory. But recently due to its capability of causing variety of infections, especially in hospitalized patients and difference in antimicrobial sensitivity of each species to varying antibiotics the present study wasundertaken with a view at characterizing the clinical isolates of enterococcus, recovered from the cases of urinary tract infections (UTI). A total of 59 Enterococci were isolated from UTI patient for a period of 1 year. In the present study it was the 3rd leading organism causing UTI. They were speciated by an identification system based on the phenotypic characteristics of enterococcus species and their antimicrobial sensitivity pattern was determined. Most of the isolates were E.faecalis 42(71.18%) followed by E.faecium accounted for 10(16.94%),E.avium 1(2.43%), E.raff 1(2.43%) and 5(8.47%) remained unidentified. E.faecium showed increased resistance to amoxicillin (90%), co-trimoxazole (80%), ciprofloxacin (70%), gentamycin (80%), ceftriaxone (90%), and cefuroxime (80%). Most of the E.faecalis was resistant to amoxicillin (66.66%), cotrimoxazole (71.42%), ciprofloxacin (76.19%), gentamycin (71.42%), ceftriaxone (64.28%) and cefuroxime (80.95%). Multidrug-resistant enterococci are emerging as a leading nosocomial uropathogen. Identification of species along with knowledge of the antimicrobial resistance profile may ultimately contribute to development of strategies for prevention and to formulate treatment guidelines for infections caused by enterococci.

Bangladesh J Med Microbiol 2014; 08 (01): 16-20