Abstract
Background: Staphylococcus aureus is an opportunistic pathogen, which often causes asymptomatic diseases. This bacterium could cause several disorders, ranging from skin infections to life-threatening diseases. S. aureus could also develop resistance to a wide range of antibiotics. Objectives: The present study aimed to investigate the prevalence and pattern of antibiotic resistance in isolated S. aureus in Imam Reza Hospital of Kermanshah, Iran. Methods: This descriptive cross-sectional study was conducted on 2,228 patients with a positive S. aureus culture who were admitted to Imam Reza Hospital during 2016 - 2018. In accordance with the CLSI protocol, bacterial isolates were separated using laboratory tests, and antibiotic susceptibility was assessed using the standard disk-diffusion method. Data analysis was performed in SPSS version 24. Results: Most of the S. aureus-positive cases were isolated from the emergency ward (43.7%), blood samples (40.1%), and urine samples (23.9%). The highest antibiotic resistance was observed against erythromycin, penicillin G, ofloxacin, cefoxitin, clindamycin, and piperacillin. With 93.3% and 81.8% sensitivity, vancomycin and teicoplanin were respectively the most effective antibiotics against S. aureus. Conclusions: According to the results, the prevalence of resistant S. aureus strains could be due to the long-term hospitalization of patients and the overuse of antibiotics in infection treatment. Therefore, proper monitoring and development of effective infection control methods are essential in these healthcare settings.
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