The hospital antibiotic policy should be implemented to rationalize the antibiotic use and to decrease the risk of spread of resistant bacteria. The aim of this study was to describe the antibiotic consumption patterns in a single oncosurgery ward before and after the implementation of hospital antibiotic policy. We conducted a retrospective analysis of the antibiotic use at the oncosurgery ward in Warsaw, Poland, in the years 2011-2016. Calculations were based on daily defined doses (DDD), DDD/100 hospitalizations, and DDD/100 person-days. Drug utilization rates (DU 90% and DU 100%) were also analyzed. After the implementation of hospital antibiotic policy, a total antibiotic consumption increased (365.35 DDD in 2011 vs. 1359.22 DDD in 2016). A significant change was observed in the antibiotic consumption patterns: the use of amoxicillin clavulanate and carbapenems or glycopeptides decreased significantly (p < 0.05), while the use of ciprofloxacin and aminoglycosides increased (p < 0.05). The DU100% rate varied from 6 in 2011 to 12 in 2016; while DU 90% rate varied from 2 in 2011 to 3-5 in 2013-2016. Although the implementation of hospital antibiotic policy did not result in a decrease in the antibiotic consumption, it seems to provide a favorable change into the antibiotic consumption pattern.
Keywords: Antibiotic resistance; Antibiotic stewardship; Antibiotic use pattern; Hospital antibiotic policy; Oncosurgery ward.