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Otitis media
1Center for Infectious Diseases and Immunology, Rochester General Hospital Research Institute, Rochester General Hospital, Rochester, NY 14621, USA. Michael.pichichero@rochestergeneral.org
Abstract:
Acute otitis media (AOM) is diagnosed based on visualization of a full or bulging tympanic membrane with middle ear effusion. The distribution of bacteria causing AOM in North America under the influence of pneumococcal conjugate vaccination and antibiotic selection pressure has resulted in a predominance of β-lactamase-producing Haemophilus influenzae followed by penicillin-resistant Streptococcus pneumoniae. Although guidelines continue to endorse amoxicillin as the preferred treatment, amoxicillin/clavulanate in high dosage would be the preferred treatment based on the otopathogen mix currently. Antibiotic prophylaxis has fallen into disfavor as a preventative strategy for AOM recurrences.
Insights
Acute otitis media (AOM) treatment should prioritize high-dose amoxicillin/clavulanate due to prevalent resistant bacteria. Current guidelines recommending amoxicillin are outdated for managing AOM effectively.
Area of Science:
- Otolaryngology
- Infectious Diseases
- Microbiology
Background:
- Acute otitis media (AOM) diagnosis relies on visualizing middle ear effusion and tympanic membrane changes.
- Bacterial patterns in North America have shifted due to vaccination and antibiotic use.
- Haemophilus influenzae and Streptococcus pneumoniae are key pathogens, with increasing resistance noted.
Purpose of the Study:
- To evaluate the current otopathogen landscape for AOM in North America.
- To reassess the appropriateness of current AOM treatment guidelines.
- To determine optimal antibiotic strategies based on prevailing bacterial resistance patterns.
Main Methods:
- Analysis of epidemiological data on AOM-causing bacteria.
- Review of antibiotic susceptibility patterns, including beta-lactamase production and penicillin resistance.
- Comparison of current treatment recommendations with observed otopathogen distribution.
Main Results:
- Predominance of beta-lactamase-producing Haemophilus influenzae identified.
- Penicillin-resistant Streptococcus pneumoniae is a significant secondary pathogen.
- Current guidelines favoring amoxicillin may not be optimal for the current bacterial mix.
Conclusions:
- High-dose amoxicillin/clavulanate is recommended as the preferred AOM treatment.
- Antibiotic prophylaxis is no longer favored for preventing recurrent AOM.
- Treatment guidelines require updating to reflect current North American otopathogen resistance profiles.
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