Introduction: Antibiotic arbitrary use by increasing resistance changed to a growing issue in the 21st century and its optimal use in hospital could be essential for reducing health system costs and drug side effects.
Objectives: The aim of this study was to investigate the pattern of antibiotic use in prescribed prescription.
Patients and Methods: This was a cross-sectional study that has been done on 300 prescriptions which selected randomly form Ardabil city hospitals. The anatomical therapeutic chemical classification system with defined daily doses (ATC/DDD) standard measurement method recommended by World Health Organization (WHO) was conducted in the study. The amount uses rate of each medication calculated by DDD/100 bed days. Data collected by a checklist and analyzed by statistical methods in SPSS version 21.
Results: The highest prescribed antibiotic was ciprofloxacin with 32% and the total antibiotics uses rate during study period was 44/95 DDD/100 Bed days. The mean number of drugs and prescribed antibiotics in intensive care unit (ICU) ward was more than other wards. However, comparing the rate of antibiotics use between wards based on ATC/DDD method showed that the infection ward with 62.9 was more than other wards. The most form of used antibiotics with 69% was in the form of Ampule and in intravenously method with 64% in all wards.
Conclusion: The results of this study showed that the most used antibiotics by considering the studied method, prescribed dose and the hospitalized days were in internal and surgery ward respectively but according ATC/DDD method the most used antibiotics was in infection ward.