Staphylococcus aureus Antimicrobial Resistancy among Specimens Isolated from Tabriz Imam Reza and Shohada hospital 2011-2013

Antimicrobial resistance is an organism’s resistance to an antimicrobial drug to which has been susceptible naturally. AMR infection caused by an organism fails in respond to the drug treatment and 70% of bacteria causing infections in hospitals are at least resistant to one of the routine drugs used in treatments.We decided to study the antimicrobial resistance of Staphylococcus aureus in clinical strains isolated in a three years period.
In a three years period, all suspected samples of infection with Staphylococcus aureus were collected and then some of these samples were randomly assigned into study protocol. After routine identification of isolates, antimicrobial resistance were studied using disk Agar diffusion and Oxicillin screening method were used to screen resistant strains to Methicillin.
Antibiogram results in 3 years for drugs used in the ward such as Cefazolin, Clindamycin and Tetracycline were resistant 10%, 21.3%, 6.6% and 16.7%, 27.9% and 8.2% , respectively Resistance was 20% to 30% in the three years period.
Mutants which are resistance have been developed recently. As a result it is any clinical and educational institute’s duty to have a plan for continuous control which needs the optimization of control tools. Considering the difference between two methods it is likely that disk providing centers must do some efficient proceedings to improve their products and finally to prevent spreading strains resistance to multiple drugs.