drug resistance of acinetobacter in selected hospitals

background: nowadays, nosocomial infection with multidrug-resistant acinetobacter is an important problem in the world, which is facing wide spectrum antibiotics and hence has become resistant. m aterials and methods: in this study, positive cultures of acinetobacter from one hundred clinical samples in seven hospitals from tehran during 2012-2013 were collected for checking antibiotic susceptibility. samples test with ceftazidim, cefepime, amikacine and imipenem by e-test and for tazocin, colistin and tigecycline was performed with disk diffusion method. r es ults: for colistin 10 samples, and for tazocin, 40 samples were performed by e-test method. then boumannii species of bacteria and non- baumannii acinetobacter were separated by pcr and antibiotic susceptibility testing was performed on them. 89% of acinetobacter samples were boumannii species, which was isolated from respiratory secretions at icu. c onclusion: boumannii and non-boumannii species of bacteria with a high percentage were resistant to ceftazidim, amikacine, cefepime, tazocin and imipenem. all baumannii and non-boumannii acinetobacter were sensitive to colistin, were only 75% sensitive to tigecycline, which is a new glycylcycline. colistin and tazocin results in samples limited to the e-test method were similar with disk diffusion.