Volume 15, Number 2 (Scientific Journal of Hamadan University of Medical Sciences-Summer 2008)                   Sci J Hamadan Univ Med Sci 2008, 15(2): 27-31 | Back to browse issues page


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Erfani Y, Safdari R, Chobineh H, Mir Salehian A, Rasti A, Eynollahi N, et al . Comparison of E.test and Disk Diffusion Agar in Detection of Antibiotic Susceptibility of E.coli Isolated from Patients with Urinary Tract Infection in Tehran Shariati Hospital. Sci J Hamadan Univ Med Sci . 2008; 15 (2) :27-31
URL: http://sjh.umsha.ac.ir/article-1-367-en.html

, arasti@tums.ac.ir
Abstract:   (1594 Views)

Introduction & Objective: UTI is one of the most common bacterial infections and Ecoli is known as an important cause of UTIs. Since bacterial resistances of antibiotics are increasing, reliable methods of antimicrobial resistance detection are of paramount importance in treatment and management of UTIs. The objective of the present study is to compare and to evaluate the performance of disk diffusion agar (Iranian and Italian) and E.test (Epsilometer test) (Sweden) for antimicrobial susceptibility testing of Ecoli isolated from UTI.

Materials & Methods: This study was done on 250 Isolates of Ecoli from patients with UTI in Shariati Hospital, Tehran University of Medical Sciences during 2004. Antibiotic susceptibility testing was performed by disk diffusion method using Iranian and Italian disk for Trimetoprim sulfamethoxazole, Gentamysin, Ceftazidim, Nitrofurantoin and Ciprofluxacin and Minimum Inhibitory concentration (MIC) determination was performed by E.test for the same set of antimicrobial. All tests were performed on muller hinton agar.

Results: Comparison of E.test and Iranian disk diffusion agar showed that paramount differences in antibiotic agreement (Max 37.8 %) those differences in case of Ceftazidim and Gentamysin were respectively 76.8% and 62.2% whereas comparison of E.test and Italian disk diffusion agar showed less difference of antibiotics agreement (Max 11.2%).

Conclusion: The results of this study showed that Iranian disk diffusion agar may be used as a preliminary screen for antibiotic susceptibility testing of E.coli and is less sensitive than Italian disk diffusion and E.test. Comparison of 3 mentioned methods have showed that E.test is the most sensitive and shows the effective dose of antibiotic for treatment and prevention of antibiotic resistance.

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Type of Study: Original | Subject: Special

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