Study of antibiotic resistance pattern of Staphylococcus aureus strains isolated from blood cultures in Tabriz Shahid Madani Hospital

Staphylococcus aureus (S aureus) is one of the important agents of many infections in hospitals and society. Increasing S aureus resistance to antibacterial drugs is one of the major health concerns, therefore studying antibiotic resistance of S aureus is very important and it has a main role in preventing creation of resistant strains. This investigation was a retrospective study and it was done by studying of 513 hospitalized heart disease patient's blood culture records in Tabriz Shahid Madani Hospital during a one-year period (2010). Statistical analysis of data has performed by Microsoft Office Excel software. Microorganisms in 71 cases (%14) of blood cultures grew. Eighteen point (three percent) of positive cultures were related to S aureus. Four cases (%31) of S aureus positive patients were females whereas 9 cases (%69) were males and the age average of patients was over than 40 years. The most of resistant cases (%31) were related to methicillin and ceftriaxon. This study showed that care and control must be performed on these bacteria together with avoiding unnecessary prescription of antibiotics because this affair can create and increase drug resistant strains.