Pharmacokinetics and Pleural Fluid Penetration of Amoxicillin and Clavulanic Acid in Patients With Pleural Infections (PK-plèvre)

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    Centre Hospitalier Universitaire, Amiens
Updated on 1 July 2022
antibiotic therapy
clavulanic acid
pleural effusion


The incidence of pleural infection is increasing worldwide since the last two decades. Antibiotics are one of the cornerstones of the treatment of this disease and must be associated to a correct evacuation of the pleural effusion.

Data concerning the pleural diffusion of antibiotics currently used in community acquired pleural infection are scarce. The main objective of this study is to evaluate the pleural pharmacokinetic of amoxicillin and clavulanic acid in patients with a complicated pleural infection (patients who need a chest tube insertion).


Only scarce data are known on the pleural diffusion of antibiotics. Most of these data are concerning antibiotics that are not commonly used for the treatment of community-acquired pleural infections. Moreover, these data are obtained from studies using heterogenous methodologies (single or repeated evaluation of the antibiotic concentration in the pleural effusion, with or without correlation to the serum concentration; animal model or very specific population (i.e. uninfected patients or following lung surgery).

The main objective of this study is to evaluate the pleural pharmacokinetic of amoxicillin and clavulanic acid in patients with a community-acquired complicated pleural infection.

Patients with a complicated pleural infection will be managed according to the French guideline with a chest tube drainage associated to a treatment with amoxicillin (2g3 by day) and clavulanic acid (200mg3 by day). Repeated samples of pleural fluid and serum will be taken to evaluate antibiotics' concentrations at H0; H; H1; H2; H3; H4; H8 and H24.

The follow-up and management of the included patients will not be modified by the study protocol except for the pleural and serum samples. Clinical, biological and radiological (chest x-ray and/or thoracic ultrasound) evaluation will be performed daily. Success of the pleural drainage will be assessed at day 3.

Condition Pleural Infection, Empyema, Community-acquired Pneumonia, Pharmacokinetic, Amoxicillin
Treatment chest tube drainage, antibiotic concentration in pleural fluid, Amoxicillin + clavulanic acid
Clinical Study IdentifierNCT04350502
SponsorCentre Hospitalier Universitaire, Amiens
Last Modified on1 July 2022

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