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[Urinary tract infections and antibiotic resistance].

P P Heisig

Audio, Transactions of the IRE Professiona... 49(5):612-7 (2010) PMID 20449778

Urinary tract infections (UTI) usually are monoinfections caused by the endogenous microflora including gram-negatives, such as Escherichia coli, or gram-positives, like enterococci. This allows for an empiric treatment of uncomplicated UTIs and a short duration of therapy to minimize the probability for the development of resistance. Resistance often is based upon mutations altering the drug target (sulfonamides, trimethoprim, fluoroquinolones, fosfomycin) or acquisition of resistance genes (beta-lactams). The latter can be collocated with other resistance genes on mobile genetic elements mediating multiple drug resistance. Such elements are part of the chromosome of the Escherichia coli clonal group A (cgA). The prevalence of resistance to nitrofurantoin and fosfomycin is below 6%, while that of sulfonamide/trimethoprim varies between 15 and 50% all over Europe. Resistance to fluoroquinolones and amoxycillin approximates 15 and over 30%, respectively. A value of >20% for the empiric treatment of uncomplicated UTIs is associated with a significantly increased duration of therapy suggesting alternative antibiotic regimens.

DOI: 10.1007/s00120-010-2259-y
Version: za2963e q8zaf q8zb4 q8zc8 q8zdc q8zee q8zf9 q8zgd

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