Which statement best reflects a core principle of antibiotic stewardship?

Which statement best reflects a core principle of antibiotic stewardship?

• A. Use broad-spectrum antibiotics initially
• B. Use the narrowest-spectrum antibiotic, for the shortest effective duration, guided by culture data
• C. Always avoid culture data in decisions
• D. Use antibiotics for at least 14 days, regardless of culture

Answer: (B)

Antibiotic stewardship focuses on giving the right drug to the right patient at the right time, using the narrowest effective spectrum for the shortest duration, and basing decisions on culture data. Narrow-spectrum therapy targets the identified pathogen while preserving normal flora, reducing collateral damage and the drive toward resistance. Culture data allow de-escalation from broader empiric therapy to a more precise agent and help determine when it’s safe to stop treatment. While starting with broader coverage can be appropriate in severe illness, the best principle emphasizes narrowing promptly and keeping the duration as short as possible based on evidence. Choices that ignore culture data or commit to a fixed, long course promote unnecessary exposure and resistance.

Antibiotic stewardship focuses on giving the right drug to the right patient at the right time, using the narrowest effective spectrum for the shortest duration, and basing decisions on culture data. Narrow-spectrum therapy targets the identified pathogen while preserving normal flora, reducing collateral damage and the drive toward resistance. Culture data allow de-escalation from broader empiric therapy to a more precise agent and help determine when it’s safe to stop treatment. While starting with broader coverage can be appropriate in severe illness, the best principle emphasizes narrowing promptly and keeping the duration as short as possible based on evidence. Choices that ignore culture data or commit to a fixed, long course promote unnecessary exposure and resistance.