Prevalence of extended-spectrum β-lactamase positive bacteria in radiologically positive urinary tract infection

The increase in antibiotic resistance among uropathogens is a global problem. The present study was an effort to assess the current antibiotic resistance pattern and plasmid profiles of some multi drug resistant bacteria isolated from urinary tract infection (UTI). Among 44 clinical samples of radiologically positive UTI, 44 microorganisms belonging to 9 genus were isolated. Of the patients, 24 were female and 20 were male. Highest incidence was found in age group of 30-45 years. Total bacterial count of the urine samples were high in most the patients. E. coli and coagulase-negative Staphylococcus spp. were most prevalent. Most of the isolates showed higher antibiotic resistance against the antibiotics used. 6 of the 44 isolate was resistant to 10 different types of antibiotics. Of the isolated uropathogens, 40.9% were ESBL positive. 7 of the isolates had no plasmid and 9 isolate had 140 MDa plasmid whereas other isolates pose smaller plasmids of different sizes. Assessment of transfer of antibiotic resistance between different genuses revealed transfer of resistance within genus. Radiological imaging showed strong correlation with microbiological findings of the patients.