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"otitis media"[MeSH Terms] AND "treatment"[MeSH Terms]

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Otitis Media (AOM) - Treatment & Management

Diagnosis Criteria

AOM requires all three of the following:

Acute onset of symptoms (ear pain, fever, irritability)
Middle ear effusion (MEE) - confirmed by bulging/erythematous TM, air-fluid level, absent TM mobility on pneumatic otoscopy, or flat tympanogram
Signs of middle ear inflammation (moderate-to-severe bulging of TM, new otorrhea not due to otitis externa)

A red but non-bulging TM without MEE = myringitis/tympanitis, not AOM. Ear pain with a normal, flaccid TM suggests a referred cause (dental abscess, TMJ disorder, pharyngitis, cervical arthritis, sinus infection).

Treatment Decision: Antibiotics vs. Observation

Immediate antibiotic therapy is indicated for:

All infants < 6 months
Children 6 months-2 years with bilateral AOM
Any age with severe illness: moderate-severe otalgia OR temp > 39°C (102.2°F)
Any age with AOM with otorrhea

Observation (watchful waiting, 2-3 days) is acceptable for:

Children 6 months - 2 years with unilateral, non-severe AOM
Children > 2 years with non-severe illness, if reliable follow-up is assured
Not validated in adults - treat adults with antibiotics

Antibiotic Regimens

Patient Group	First-Line Drug	Dose & Duration
Low-risk (> 6 yr, no recent antibiotics, no daycare, temp < 38°C)	Amoxicillin	40-50 mg/kg/day divided doses x 5 days
High-risk (< 2 yr, daycare, recent antibiotics, otorrhea, temp > 38°C)	Amoxicillin	80-90 mg/kg/day divided doses x 10 days
Treatment failure (symptoms persist after 3 days)	Amoxicillin-clavulanate (Augmentin)	80-90 mg/kg/day x 7-10 days
Treatment failure alternative	Cefuroxime axetil	20-30 mg/kg/day BID x 7-10 days
Treatment failure (severe/parenteral)	Ceftriaxone (IM/IV)	50 mg/kg x 1-3 days
Penicillin allergy (non-severe)	Cefuroxime axetil or Cefpodoxime	Age-based dosing
Penicillin allergy (severe)	Ceftriaxone	See above

Why high-dose amoxicillin? S. pneumoniae resistance to penicillin (15-50%) is mediated by altered penicillin-binding proteins - overcome by high-dose amoxicillin. H. influenzae and M. catarrhalis use beta-lactamase, which is why amoxicillin-clavulanate is used for treatment failures.

Pain Management

Antibiotics do not provide pain relief in the first 24 hours. Treat pain promptly with:

Acetaminophen or ibuprofen (OTC analgesics) - first-line
Topical anesthetic ear drops (short-term, if TM is intact)

Special Scenarios

AOM with perforation/otorrhea from acute perforation:

Treat the same as AOM without perforation
Most perforations are small and heal spontaneously
Keep ear dry

Tympanostomy tube + acute otorrhea:

Use ototopical fluoroquinolone drops (e.g., ciprofloxacin/ofloxacin drops)
Avoid aminoglycoside ear drops - ototoxic if TM is not intact

Recurrent AOM (≥ 3 episodes/6 months or ≥ 4/year):

Consider referral for tympanostomy tube insertion
Prophylactic antibiotics are generally not recommended

Complications to Watch For

Complication	Key Features	Management
Mastoiditis	Post-auricular erythema/tenderness, auricle protrusion, abnormal TM	CT scan if intracranial involvement suspected; IV antibiotics ± myringotomy; ENT referral
Meningitis / intracranial extension	Headache, stiff neck, altered mental status	Urgent CT + LP; hospitalization
Labyrinthitis	Vertigo + sensorineural hearing loss with AOM	ENT referral

Key Organisms

S. pneumoniae - 25-40% (most virulent; most likely to cause complications)
H. influenzae - 10-30% (beta-lactamase producing strains respond to amoxicillin-clavulanate)
M. catarrhalis - 2-15% (nearly all beta-lactamase producing)

Sources: Textbook of Family Medicine 9e, p. 404-406; Rosen's Emergency Medicine, p. 514-526

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