Which of the following is an anti-pseudomonal drug of penicillin class: March 2013
**Core Concept**
The question is testing the student's knowledge of anti-pseudomonal drugs within the penicillin class of antibiotics. These drugs are specifically effective against Pseudomonas aeruginosa, a type of bacteria that can cause serious infections.
**Why the Correct Answer is Right**
Carbenicillin is a penicillin-class antibiotic that has been shown to have anti-pseudomonal activity. It works by inhibiting the synthesis of the bacterial cell wall, ultimately leading to the death of the bacteria. Carbenicillin is effective against Pseudomonas aeruginosa due to its ability to penetrate the bacterial cell wall and inhibit the enzyme penicillin-binding protein (PBP).
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect as it does not specify an anti-pseudomonal drug within the penicillin class.
* **Option B:** This option is incorrect as it is not a penicillin-class antibiotic.
* **Option D:** This option is incorrect as it is not specifically effective against Pseudomonas aeruginosa.
**Clinical Pearl / High-Yield Fact**
When using anti-pseudomonal antibiotics, it is essential to consider the potential for resistance and ensure proper dosing and duration of treatment to maximize efficacy.
**Correct Answer:** C. Carbenicillin