In a child with acute otitis media who fails initial amoxicillin therapy, which antibiotic class is appropriate?

• A. Beta-lactamase–covering antibiotics
• B. Macrolide antibiotics
• C. Tetracyclines
• D. Aminoglycosides

Answer: (C)

Failure of amoxicillin in pediatric acute otitis media often means the infecting bacteria produce beta-lactamase, which can inactivate plain amoxicillin. The appropriate next choice is an antibiotic that includes beta-lactamase coverage, such as amoxicillin-clavulanate, or another agent with reliable activity against beta-lactamase–producing organisms.

Tetracyclines are not suitable for children due to the risk of permanent teeth discoloration and interference with bone growth, so they’re avoided in this setting. Aminoglycosides won’t effectively treat middle-ear infections because they don’t penetrate well into the middle ear, and macrolides have higher resistance rates among common AOM pathogens.