Catheterization is a risk factor for the development of urinary tract infections. On the other side, urinary tract
infections in catheterized patients associated with abnormalities increase the risks of therapy failure. Different kinds of
microorganisms (bacteria, yeasts) can be associated with urinary infections in catheterized patients. Aim of this review is
to summarize the main factors involved in the development of infections in catheterized patients, focusing on the mechanisms
related to colonization and biofilm formation. Current prevention and treatment strategies are also reviewed, both
referring to experimental studies and to currently approved materials. Our experience in the field of chemically treated
materials for preventing infection in intracorporeal urinary catheters (stents) and relevant patents are also reported.
Keywords: Bacteriuria, biofilm, Catheters, Escherichia coli, stent, urinary infections.
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