• Bahareh Vakili, Hossein Fazeli, Parisa Shoaei, Majid Yaran, Behrooz Ataei, Farzin Khorvash, and Moj Khaleghi.
• Department of Microbiology, Science and Research Branch, Islami Azad University, Kerman, Iran.
• J Res Med Sci. 2014 Mar 1; 19 (Suppl 1): S67-70.

BackgroundNosocomial infection caused by Acinetobacter baumannii has emerged as a serious problem world-wide. Finding the suitable drug is an important priority. The aim of this study was to determine colistin (polymyxin E) resistance in clinical isolates of A. baumannii from intensive care units (ICUs) of Al Zahra Hospital.Materials And MethodsSixty isolates of A. baumannii from patients hospitalized in ICU (Al Zahra Hospital, Isfahan University of Medical Sciences [IUMS]) were studied. All isolates of A. baumannii were tested for colistin susceptibility by Eopsilometer test (E-test).ResultsOf the 60 isolates 57, (95%) were multidrug resistant (MDR) and 76.6% (46/60) were highly resistant. The rate of colistin resistant with the E-test method was 11.6% (7/60).ConclusionAs the frequency of resistance to colistin is low, it can be used as an easily available drug for treatment of MDR A. baumannii strains, which are susceptible to colistin.

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