Which of the following antibiotics is NOT effective against Pseudomonas aeruginosa? A) Azithromycin B) Ceftazidime C) Amikacin D) Ciprofloxacin

Understand the Problem

The question is asking which antibiotic among the given options is not effective against the bacterium Pseudomonas aeruginosa. This involves knowledge of antibiotic effectiveness.

More Information

Azithromycin, a macrolide antibiotic, is typically not effective against Pseudomonas aeruginosa due to its resistance mechanisms, unlike the other options listed, which include Ceftazidime, Amikacin, and Ciprofloxacin, known for activity against Pseudomonas.

Tips

A common mistake is assuming all broad-spectrum antibiotics cover Pseudomonas aeruginosa, but it's essential to check specific susceptibilities as it has inherent resistance to many antibiotic classes.

Sources

• Responses of Pseudomonas aeruginosa to antimicrobials - Frontiers - frontiersin.org
• Pseudomonas aeruginosa Infections Medication: Antibiotics ... - emedicine.medscape.com