Change in antimicrobial resistance rates in Pseudomonas aeruginosa isolates by years: Analysis for seven years

Objective: Pseudomonas aeruginosa is naturally resistant to many antimicrobial drugs, and resistance rates against currently available antimicrobials may vary according to different geographical regions, hospitals and years.The ability to develop resistance to antimicrobials during the treatment of infections causes treatment difficulties and requires constant monitoring of the resistance profile.This study aimed to retrospectively determine the resistance rates of P. aeruginosa strains isolated from different culture samples sent to the microbiology laboratory from hospitalized patients to various antimicrobials and to examine their changes over the years.Methods: 1746 P. aeruginosa isolates grown in inpatient culture samples sent to the microbiology laboratory from all clinics between January 2016 and December 2022 were evaluated retrospectively.Vitek 2 Compact automated system (BioMrieux, France) was used for antimicrobial susceptibility testing (AST).AST results were evaluated according to Minimum