Extended-spectrum β-lactamases in ambulatory care: a clinical perspective
2008
Extended-spectrum β-lactamase (ESBL)-producing organisms are emerging as a cause of infection in outpatients in many areas of the world. Most of these involve urinary tract infections caused by Escherichia coli harbouring CTX-M types of ESBLs. Risk-factors for such infections include older age and previous use of quinolones and cephalosporins. Oral alternatives for such infections are limited. These organisms may also cause some community-acquired life-threatening infections, such as bacteraemic urinary tract or intra-abdominal infections. Patients with these infections are at increased probability of receiving inappropriate empirical treatment. More studies addressing the risk-factors and therapeutic options for these infections are needed.
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