Johns Hopkins ABX Guide
Mastoiditis
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PATHOGENS
Acute mastoiditis:
- Streptococcus pneumoniae
- Haemophilus influenzae
- Moraxella catarrhalis
- Staphylococcus aureus
- Streptococcus pyogenes (GAS)
Chronic mastoiditis: usually associated with recurrent otitis media or chronic otitis media (and prior antibiotic use)
- Pseudomonas aeruginosa
- Enterobacteriaceae
- S. aureus
- Anaerobes:Bacteroides, Prevotella, Fusobacterium, Peptostreptococcus
- Mycobacterium tuberculosis (rare)
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PATHOGENS
Acute mastoiditis:
- Streptococcus pneumoniae
- Haemophilus influenzae
- Moraxella catarrhalis
- Staphylococcus aureus
- Streptococcus pyogenes (GAS)
Chronic mastoiditis: usually associated with recurrent otitis media or chronic otitis media (and prior antibiotic use)
- Pseudomonas aeruginosa
- Enterobacteriaceae
- S. aureus
- Anaerobes:Bacteroides, Prevotella, Fusobacterium, Peptostreptococcus
- Mycobacterium tuberculosis (rare)
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