[Should doses of antibiotics be adjusted?]

Area of Science:

• Pharmacology
• Infectious Diseases
• Clinical Pharmacy

Background:

• Rising antibiotic resistance necessitates preserving existing antibiotics for therapeutic success and risk mitigation.
• Optimizing antibiotic use aims to ensure efficacy, limit toxicity, and prevent the emergence of resistant strains.

Purpose of the Study:

• To review antibiotic pharmacokinetics and pharmacodynamics (PK/PD) principles for clinical effectiveness.
• To highlight situations requiring antibiotic dosage adjustments, including specific patient populations and administration modes.

Main Methods:

• Review of pharmacokinetic and pharmacodynamic principles of antibiotic classes.
• Analysis of clinical scenarios necessitating dosage adaptation, with a focus on obese patients.
• Discussion of administration modes (e.g., intermittent vs. continuous) as a key PK/PD parameter.

Main Results:

• Dosage adaptation is essential in patients with renal/hepatic impairment, extreme weights, and those on narrow therapeutic margin antibiotics.
• Antibiotic dosage adjustments are critical for achieving clinical effectiveness across various antibiotic classes.
• Administration mode significantly impacts PK/PD targets and should be considered alongside dose adjustments.

Conclusions:

• Tailoring antibiotic dosages and administration strategies based on PK/PD principles is vital for optimizing treatment outcomes.
• Proactive dosage adjustments are necessary in complex patient populations to combat antibiotic resistance and ensure patient safety.