Otitis Media in Children

Introduction & Epidemiology - Ear's Unwanted Guest

• Otitis Media (OM): Middle ear inflammation.
  • AOM: Rapid onset; Middle Ear Effusion (MEE) + acute inflammation.
  • OME: MEE; no acute inflammation signs.
  • CSOM: Persistent discharge via perforated Tympanic Membrane (TM).
• Peak age: 6-18 months; high prevalence in India.
• Risk Factors: Daycare, pacifier use, formula feeding, passive smoking, craniofacial/immune issues, GERD.

  ⭐ Otitis media is the most common indication for antibiotic therapy in children.

Pathophysiology & Microbiology - Eustachian Tube Tango

• Eustachian Tube Dysfunction (ETD): Key factor. In children, ET is shorter, wider, & more horizontal → impaired drainage & ventilation.
• Viral URI: Common precursor, causing ET inflammation & obstruction.
• Key Pathogens: 📌 SHiM
  • Streptococcus pneumoniae (most common)
  • Haemophilus influenzae (non-typable)
  • Moraxella catarrhalis
• Biofilms: Implicated in Otitis Media with Effusion (OME) & Chronic Suppurative Otitis Media (CSOM), contributing to persistence.

⭐ Eustachian tube dysfunction is the primary predisposing factor in the pathogenesis of otitis media.

Clinical Features & Diagnosis - Decoding Ear Drama

, OME (air-fluid levels, dull TM), CSOM (TM perforation with otorrhea))

⭐ Pneumatic otoscopy is crucial for assessing TM mobility, a key diagnostic feature for both AOM and OME.

Types, Complications & Sequelae - OM's Many Faces

• Types of Otitis Media:
  • AOM (Acute Otitis Media): Rapid onset of inflammation.
  • OME (Otitis Media with Effusion): Middle ear effusion (MEE) ≥3 months; no acute inflammation.
  • CSOM (Chronic Suppurative Otitis Media): Discharge ≥6 weeks via tympanic membrane perforation.
  • RAOM (Recurrent AOM): ≥3 episodes/6mo or ≥4 episodes/12mo.

• Complications:
  • Intratemporal: Mastoiditis, petrositis, labyrinthitis, facial nerve palsy.
  • Intracranial: Meningitis, brain abscess, lateral sinus thrombosis.
• Sequelae:
  • Conductive hearing loss (common).
  • Speech and language development delay.
  • Cholesteatoma (especially with CSOM).

⭐ Mastoiditis is the most common suppurative complication of AOM.

Management & Prevention - Kicking OM Out

• AOM:
  • Pain relief: Paracetamol/Ibuprofen.
  • Amoxicillin 80-90 mg/kg/day if: <6mo; 6mo-2yr (certain/severe); >2yr (severe).
  • Watchful waiting an option.

• OME:
  • Observe 3 months; assess hearing.
  • Myringotomy + grommet for persistent bilateral OME with hearing loss >40dB or TM changes.
• CSOM:
  • Aural toilet; topical +/- systemic antibiotics (quinolones if TM intact).
  • Surgical repair (tympanoplasty).
• Prevention:
  • Vaccination (Pneumococcal, Influenza).
  • Breastfeeding, avoid smoke, manage allergies.

⭐ High-dose amoxicillin (80-90 mg/kg/day) is first-line for AOM in children not recently treated with beta-lactams.

High‑Yield Points - ⚡ Biggest Takeaways

• Most common pathogens for Acute Otitis Media (AOM) are Streptococcus pneumoniae, non-typable Haemophilus influenzae, and Moraxella catarrhalis.
• Peak age incidence for AOM is 6 to 18 months, often linked to Eustachian tube dysfunction.
• Bulging tympanic membrane with decreased mobility on pneumatic otoscopy is a key diagnostic sign of AOM.
• First-line antibiotic for AOM is high-dose Amoxicillin (80‑90 mg/kg/day).
• Recurrent AOM is defined as ≥3 episodes in 6 months or ≥4 episodes in 12 months.
• The most common complication of otitis media is conductive hearing loss; mastoiditis is the most common intracranial complication.
• Otitis Media with Effusion (OME) persisting for >3 months with hearing loss may require myringotomy with grommet insertion.