A new antibiotic is classified as a bacteriocidal agent. This means that the drug:
1. slows the growth of the infectious agent.
2. has a high potency.
3. is highly efficacious.
4. kills the infectious agent.
Correct Answer: 4
Rationale 1: Bacteriostatic drugs slow the growth of bacteria.
Rationale 2: Potency refers to the strength of an antibiotic.
Rationale 3: Efficacy refers to effectiveness.
Rationale 4: Bacteriocidal drugs kill bacteria.
Global Rationale: Whether it is used for treating or preventing disease, the primary goal of anti-infective therapy is to assist the body in eliminating a pathogen. Drugs that accomplish this goal by killing bacteria are called bacteriocidal. Some drugs do not kill pathogens but instead slow their growth, allowing natural body defenses to eliminate the microorganisms. These growth-slowing drugs are called bacteriostatic.
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