Aminoglycosides · Pharmacology

Which parameter of the 'killing curve' defines the efficacy of aminoglycosides?

  1. Duration of time above the MIC ($T > MIC$)
  2. Peak concentration to MIC ratio ($C_{max}/MIC$)
  3. Total cumulative dose administered over a seven-day course
  4. Rate of hepatic metabolism of the drug
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Correct answer: Peak concentration to MIC ratio ($C_{max}/MIC$)

Aminoglycosides exhibit concentration-dependent killing. Higher peak concentrations ($C_{max}$) relative to the Minimum Inhibitory Concentration (MIC) lead to more rapid and extensive bacterial destruction.

Difficulty: Medium Question 13 of 20

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