Otitismedia

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Otitismedia

  1. 1. OTITIS MEDIA
  2. 2. DefinitionOtitis media : inflammation of the middle ear withoutreference to etiology or pathogenesisAcute otitis media : inflammation of the middle ear withrapid onset of one or more local or systemic signs andsymptoms of acute infection within the middle ear (otalgia,otorrhea, fever, anorexia, vomiting or diarrhea)Recurrent otitis media (5 to 10% of children) – > 3 episodes of AOM in 3 months with evidence of cure between episodes – > 4 episodes of AOM in 6 months
  3. 3. Acute otitis media Normaal TV Acute otitis media
  4. 4. Otitis media met efusie – secretoire otitis mediaglue ear …
  5. 5. 5. Pathogenesis of OM Infection ET dysfunction Host respons Liberation of inflammatory mediators Increase of vascular permeability Increase of glandular secretionInflammation Mucosal proliferation
  6. 6. 1. Role of the Eustachian Tube1. Pressure regulation of middle ear2. Clearance ‘Drainage’ of middle ear secretions mucociliary muscular3. Protection from sound and secretion anatomic immunologic and mucociliairy
  7. 7. Eustachian tube• Usually closed• Opens during swallowing, yawning, and sneezing• Opening involves cartilaginous portion• Tensor veli palatini responsible for active tubal opening• No constrictor function
  8. 8. Dysfunction : 1. Impairment of pressure regulation Functional obstruction Open Weak TVP Obstruction Anatomic obstruction Inflammation adenoid Tumor Intrinsic Extrinsic After Bluestone
  9. 9. Infection ET dysfunction Host respons Liberation of inflammatory mediators Increase of vascular permeability Increase of glandular secretionInflammation Mucosal proliferation

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