Objective: We aimed to retrospectively determine the distribution of antibiotic resistance rates of P. aeruginosa strains which were isolated from samples sent to our hospital's microbiology laboratory between the years 2011-2015. Methods: Various samples sent from different clinics to our laboratory for the isolation of P. aeruginosa were inoculated on blood agar and EMB agar plates and incubated at 37° C for 18-24 hours. Grown bacteria were identified by conventional techniques and MALDI Biotyper (Bruker, Germany) system. Antimicrobial susceptibility testing of isolates for the years 2011-2014 were studied in accordance to recommendations of Clinical Laboratory Standards Institute (CLSI) and for the year of 2015 according to The European Committee on Antimicrobial Susceptibility Testing (EUCAST) recommendations. Antimicrobial susceptibilities were evaluated by the disk diffusion method with Mueller-Hinton medium in outpatients and by Phoenix automated system (BD, Sparks, MD, USA) in service and intensive care patients. Results: P. aeruginosa strains isolated from 1026 outpatients and 408 inpatients between the years ÖZET Amaç: Hastanemiz mikrobiyoloji laboratuvarına gönderilen örneklerden izole edilen P. aeruginosa suşlarının 2011-2015 yıllarındaki antibiyotik direnç yüzdelerinin dağılımının saptanması amaçlanmıştır.

Aim: Community and hospital acquired urinary tract infections (UTI) are the most common bacterial infections in all age groups. In this study, the women diagnosed UTI, which complicated and uncomplicated, were referred to outpatient clinics between 2011 and 2015 were selected. The suitability of empirical antimicrobial therapy prescribed with resistance patterns of Gram negative bacteria isolated from these patients was investigated. Methods: UTI complaining and urine culture ≥10⁵ cfu / ml of bacteria that women aged 18-65 were comprised the study group. HIS (Hospital Information System Software) was scanned for these patients and uncomplicated and complicated UTI distinction was made according to the criteria set by Infectious Diseases Society of America (IDSA, 2016 Resistance patterns and empirical treatment in urinary tract infection P a g e / S a y f a | 100

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