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Fluoroquinolonas

Authors: Almeida, MG; Machado, MJ;

Fluoroquinolonas

Abstract

As fluoroquinolonas são compostos sintéticos quimicamente relacionados com o ácido nalidíxico. Embora não estando ainda bem esclarecido o mecanismo de acção, pensa-se que actuam inibindo a DNA-girase. São agentes antimicrobianos de largo espectro, possuindo elevada actividade contra Enterobacteriáceas. São activas contra algumas estirpes de Pseudomonas aeruginosa e Estafilococus sp., contudo bibliografia recente refere aumento de resistências. Tem actividade reduzida contra Streptococcus e anaeróbios. São bem absorvidas por via oral, apresentando uma boa distribuição tecidular, excretando-se preferencialmente por via renal. São fármacos seguros com poucos efeitos secundários, sendo os mais frequentes os gastrointestinais, algumas alterações a nível do S.N.C. e mais raramente reacções de hipersensibilidade. As interacções com alguns medicamentos nomeadamente antiácidos, teofilina e varfarina podem ter algum significado clínico. A biodisponibilidade das fluoroquinolonas permite a sua administração por via oral sem perda de eficácia terapêutica, quando comparadas com administração IV, reduzindo assim substancialmente os custos de tratamento.

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Portugal
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Fluoroquinolonas

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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