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  • Title: [Fluconazole: comparison of pharmacokinetics, therapy and in vitro susceptibility of yeasts].
    Author: Wildfeuer A, Laufen H, Schmalreck AF, Yeates RA, Zimmermann T.
    Journal: Mycoses; 1996; 39 Suppl 2():51-7. PubMed ID: 9198746.
    Abstract:
    Fluconazole penetrates well into the tissues and body fluids which were examined and achieves rapid equilibration between the different compartments. The pharmacokinetics of fluconazole are independent of the dose after oral or intravenous administration. This finding, together with the drug's slow elimination (t1/2 30 h) facilitate the estimation of the therapeutically effective dosage. The concentrations of fluconazole measured in blood can be extrapolated to the concentrations in tissue (lung, brain, gynecological tissues), body fluids (sputum, saliva, vaginal secretions) and exudates. The concentration of fluconazole in cerebrospinal fluid and in the vitreous humour of the eye is ca. 80% of that in blood. Fluconazole is predominantly excreted in the urine in the unchanged form, which explains the 10 to 20 fold higher concentration of the drug in urine relative to blood. Although this pharmacokinetic profile favours the use of fluconazole in mycotic infections of the urinary tract it also means that the dose of the drug may have to be adapted to lower regimens in the systemic treatment of patients with restricted kidney function. The in vitro and in vivo susceptibility of the yeasts correlates with the concentrations of fluconazole measured in the different compartments of the body.
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