FREQUENCY AND SUSCEPTIBILITY PATTERN OF THE NON FERMENTATIVE GRAM NEGATIVE BACTERIA IN TWO EDUCATIONAL HOSPITALS IN SARI

Background and Aim:Non-fermentative gram negative bacteria as an opportunistic strain because of multi drug resistant patterns has been reported as the main concern in hospital wards in worldwide. Screening of the non- fermentative bacteria and susceptibility pattern were the main objectives of this study.Methods:In this study, following to the isolation and identification of non-fermentative gram negative bacteria (Pseudomonas aeroginosa and Acinetobacter baumanni) by using biochemical recipes from clinical specimen referred to the Zareh an BooAli hospitals in Sari, susceptibility pattern of mentioned bacteria was assessed according to the CLSI guidelines taking advantage of Disc Diffusion method.Results:Out of 1792 clinical specimens, 412 (22.99%) were identified. Prevalence of the isolates was as follow: 166 (40.29%) P. aeroginosa and 238 (57.76%) A. baumanni. Susceptibility patterns was shown, 95.78% of P. aeroginosa isolates were resistant against cephalexin (97.8% in Boali, 93.3% in zare). This value for A. baumanni strains when subjected to the imipenem observed as 98.7% (100% in boali, 97.4% in Zare) resistant for imipenem too.Conclusion:In conclusion because of high prevalence of carbapenem resistant strains in mentioned hospitals designing the new procedure for antibiotic trophy and designing new protocols to remove the mentioned bacterial agents are essential.

کلیدواژه ها:

P. aeroginosa ، A. baumanni ، clinical sample ، susceptibility testing