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Antimicrob Agents Chemother. 1992 October; 36(10): 2099-2103

Penetration of cefpodoxime proxetil in lung parenchyma and epithelial lining fluid of noninfected patients.

Department of Microbiology, Bichat-Claude Bernard University Hospital, Paris, France.

ABSTRACT

The pulmonary disposition of cefpodoxime was studied in 12 patients with pulmonary opacities after a single oral dose of 260 mg of cefpodoxime-proxetil, which is equivalent to 200 mg of cefpodoxime. Blood and lung tissue samples were collected during surgery, and bronchoalveolar lavage was carried out 3 h (group A) or 6 h (group B) after drug administration. Urea was used as an endogenous marker for measurement of the volume of epithelial lining fluid (ELF). Concentrations were measured by using a microbiological assay. The mean concentrations of cefpodoxime in plasma, ELF, and lung tissue were, respectively, 1.85 +/- 0.82 mg/liter, 0.22 +/- 0.13 mg/liter, and 0.89 +/- 0.80 mg/kg of body weight in group A and 1.40 +/- 1.25 mg/liter, 0.12 +/- 0.14 mg/liter, and 0.84 +/- 0.61 mg/kg in group B. Concentrations in lung parenchyma 6 h after dosing were at least equal to or above the MICs for 90% of the strains of most organisms commonly found in respiratory tract infections, whereas data for ELF suggest levels of drug insufficient to inhibit bacteria.

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