Quinolones: a comprehensive review
Abstract
With the recent introduction of agents such as gatifloxacin and moxifloxacin, the traditional gram-negative coverage of fluoroquinolones has been expanded to include specific gram-positive organisms. Clinical applications beyond genitourinary tract infections include upper and lower respiratory infections, gastrointestinal infections, gynecologic infections, sexually transmitted diseases, and some skin and soft tissue infections. Most quinolones have excellent oral bioavailability, with serum drug concentrations equivalent to intravenous administration. Quinolones have few adverse effects, most notably nausea, headache, dizziness, and confusion. Less common but more serious adverse events include prolongation of the corrected QT interval, phototoxicity, liver enzyme abnormalities, arthropathy, and cartilage and tendon abnormalities. The new fluoroquinolones are rarely first-line agents and should be employed judiciously. Inappropriate use of agents from this important class of antibiotics will likely worsen current problems with antibiotic resistance. Applications of fluoroquinolones in biologic warfare are also discussed.
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