Resistance of hospital urinaryinfection pathogens by the data of multicenter microbiologicalstudies UTIAP-I and UTIAP-II

Abstract

Aim. To study causative agents and sensitivity of E-coli strains
isolated from adult outpatients with uncomplicated urinary infection
(UI) in different regions of Russia.
Material and methods. A multicenter prospective epidemiological
study included adult patients with uncomplicated infections of the upper
or lower urinary tracts. MPK of antibiotics was established by dilution
in agar according to NCCLS recommendations, 2000-2002.
Results. Among UI causative agents, E.coli was most frequent
(85.9%). K. Pneumoniae, Proteus spp., Staphylococcus spp., P. Aeruginosa,
Enterococcus spp.occurred much less frequently (6, 1.8, 1.6,1.2,
and 1.0%, respectively). E. Coli UI was highly resistent to ampicilline (37.1%),
cotrimoxasol (21%),maximal resistance being in St-Petersburg
(51.9 and 31.5%, respectively). Such oral antibiotics as
norfloxacin and ciprofloxacin, cefuroxim, amoxicillin/clavulanat, nitrofurantoin
were maximally active against E. Coli (4.3, 2.4, 2.6 and
1.2%, respectively).
Conclusion. High resistance of E.coli, which is the chief causative
agent of uncomplicated UI, to ampicillin, cotrimoxasol was detected.
Fluoroquinolones, amoxicillin/clavulanat, nitrofurantoin, cefuroxim
have high microbiological activity. On the basis of the pharmacokinetic,
safety and other evidence it is concluded that drugs of choice
for therapy of uncomplicated UI in Russia are oral fluoroquinolones

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