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  • Title: New antibiotic agents for bloodstream infections.
    Author: Vergidis PI, Falagas ME.
    Journal: Int J Antimicrob Agents; 2008 Nov; 32 Suppl 1():S60-5. PubMed ID: 18723329.
    Abstract:
    Infections due to multidrug-resistant pathogens have shown a dramatic worldwide increase in prevalence. Bloodstream infections (BSIs) represent an important cause of morbidity and mortality in hospitalised patients. Research in the field led to the introduction of several novel antibiotic agents in the fight against bacterial pathogens. New antibiotics used against Gram-positive bacteria, mainly meticillin-resistant Staphylococcus aureus and vancomycin-resistant enterococci, include daptomycin, linezolid, quinupristin/dalfopristin and semisynthetic lipoglycopeptides. Among the Gram-negative bacteria, extended-spectrum beta-lactamase-producing Enterobacteriaceae as well as highly resistant Pseudomonas and Acinetobacter isolates are of particular concern. Doripenem is a recently approved carbapenem. Polymyxins are reconsidered as valuable therapeutic options for Gram-negative infections. Tigecycline, a glycylcycline, and ceftobiprole, a novel cephalosporin under investigation, have activity both against Gram-positive and Gram-negative organisms. In addition to the above agents, alternative treatment approaches that require further investigation have also been introduced into clinical practice. These include antibiotic lock therapy and continuous intravenous administration of antibiotics. In this article, we review the above treatment options for BSIs based on current clinical evidence. Comparative trials specifically focusing on patients with bacteraemia were generally not performed; however, a proportion of patients from the reported studies did have bacteraemia.
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