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Pharmacological indices in antibiotic therapy
Antina Barger1, Christine Fuhst, Bernd Wiedemann
1Pharmaceutical Microbiology, University of Bonn, Meckenheimer Allee 168, 53115 Bonn, Germany.
The Journal of Antimicrobial Chemotherapy
|November 14, 2003
Summary
Pharmacological indices like AUC/MIC and T>MIC guide antibiotic dosing by comparing drug activity. Standardizing terminology is crucial for consistent antibiotic therapy and understanding drug-pathogen interactions.
Area of Science:
- Pharmacology
- Infectious Diseases
- Clinical Pharmacy
Background:
- Antibiotic treatment has evolved, with pharmacological indices now central to rationalizing drug selection and dosing.
- Key parameters include pharmacokinetic (AUC, Cmax) and pharmacodynamic (MIC) measures, forming the basis for indices like AUC/MIC, Cmax/MIC, and T>MIC.
Purpose of the Study:
- To clarify and standardize the terminology of pharmacokinetic and pharmacodynamic parameters and pharmacological indices in anti-infective pharmacology.
- To emphasize the importance of considering patient-specific pharmacokinetics and pathogen-specific pharmacodynamics beyond simple MIC values for effective antibiotic dosing.
Main Methods:
- Review and analysis of existing literature on pharmacokinetic and pharmacodynamic indices for antibiotic therapy.
- Consultation and publication by the International Society for Anti-Infective Pharmacology (ISAP) to establish uniform terminology.
Main Results:
- Identification of key pharmacological indices (AUC/MIC, Cmax/MIC, T>MIC) used for concentration-dependent and time-dependent antibiotics.
- Highlighting inconsistencies in the definition and application of these indices across scientific literature.
- Recognition that AUC/MIC is not universally accepted as a sole index for all antibiotic classes.
Conclusions:
- Standardized terminology, as proposed by ISAP, is essential for consistent and accurate application of pharmacological indices in antibiotic dosing.
- Effective antibiotic therapy requires a nuanced approach, considering individual patient factors, infection site, and pathogen-specific pharmacodynamics beyond MIC.