Jaroslav Beck, Ladislav Valanský
Objective: The aim of the study was to find out the possible changes of antibiotic susceptibility, in patients with community urinary tract infections in the time of admission to the urologic clinic. We have compared actual results with data, collected 12 years earlier. Evaluation of the antibiotic resistance and the actual local spectrum of uropathogens are necessary for the appropriate and sufficient empirical treatment of urinary tract infection, in patients admitted to the urology department. Material and methods: We have retrospectively analyzed 374 positive first urine cultures in 350 patients with significant bacteriuria, admitted to the department of urology in two periods. The first one was during the years 1996, 1997 and the second one in the year 2009. The antimicrobial susceptibility was determined according to the Clinical and Laboratory Standards Institute protocol and it was statistically evaluated by using of Chi quadrat test. Results: The most frequent uropatogen in the year 2009 was Escherichia Coli, with prevalence of 71,2 %, and it was followed by Klebsiella (8,2 %), Enteroccocus (7,3 %), Pseudomonas (3,7 %) and the others (9,6 %). Analysis of Escherichia coli antimicrobial susceptibility showed, that nitrofurantoin had very low rates of resistance in first as well as in the second period (5,9 % and 5,1 %, respectively). We have noticed triple as high resistance to ciprofloxacin in the year 2009 than in the years 1996 and 1997 (p < 0,001). Resistance to co-trimoxazole decreased, but remains still high, in the level of 25,8 %. Cefuroxim together with cefotaxime show high antimicrobial activity with resistance of 10,1 % and 5,1 % in 2009, respectively. Meropenem, piperacilin, gentamicine and colistine are very effective in parenteral form of antimicrobial therapy. Conclusions: Massive use (misuse) of some types of antibiotics, like fluorochinolons in the past years, can lead to their high levels of microbial resistance. We have noticed threefold resistance increase of Escherichia coli to ciprofloxacine. It is necessary to continuously monitor actual levels of local uropathogens resistance, to achieve effective therapy and prophylaxis of uroinfetions. Nitrofurantoin and cefuroxim seem to be one of the possibilities of appropriate antimicrobial therapy nowadays.