Effects of Fluoroquinolone Restriction In the hospital on the Development Of sensitivity of Selected Bacterial Pathogens

Abstract

Introduction: Fluoroquinolones are a frequently prescribed class of antibiotics, which has been blacklisted in recent years because of a growing evidence of the connection with serious undesirable effects, infections Clostridioides difficile, and a connection with the occurrence of multiresistant strains. Methods: In the University Hospital Hradec Kralove in the course of the years 2009-2019, several antibiotic stewardship restrictive and educational interventions were performed by the Antibiotic Centre aiming to decrease quinolone antibiotics administration. The data of the consumption of quinolone antibiotics were retrospectively evaluated and correlated with the development of sensitivity and occurrence of multiresistance of selected bacteria in the hospital. Results: In the period under investigation, consumption of fluoroquinolone antibiotics significantly decreased (p<0.001) in 10 years by 71.8% to 26.7 DDD/1000 patient day. Sensitivity of Escherichia coli and Pseudomonas aeruginosa to fluoroquinolones in the period under investigation increased by 4.8% (respectively by 15%); on the other hand, sensitivity of Staphylococcus aureus decreased by 4.2% to 85.5% share of sensitive strains. The incidence of the multiresistant isolates Pseudomonas aeruginosa decreased by 8.1%, but the occurrence of ESBL-producing Klebsiella pneumoniae was increased in the period under investigation. The occurrence of methicillin-resistant Staphylococcus aureus did not show a stable trend and finally it was moderately increased by 2.9%. Paterova et al.: Effect of fluoquinolone restriction on bacterial sensitivity IN PRESS Conclusion: Implementation of programmes of antimicrobial stewardship for hospitalized patients resulted in a decrease and a rationalization of fluoroquinolone administration. The reduction of their consumption in our hospital resulted in a statistically insignificant increase in the sensitivity of Escherichia coli and Pseudomonas aeruginosa, but not Staphylococcus aureus.