Complications of Chronic otitis media Chunfu dai
Complications of Chronic Otitis Media Chunfu Dai
Three categories on an anatomic basis Extratemporal extracranial a Bezold abscess Subperiosteal abscess Intratemporal Mastoiditis, labyrinthitis, sensorineural hearing loss, petrositis Facial paralysis, Cholesteatoma, labyrinthine fistula Intracranial Epidural abscess, lateral sinus thrombosis, otitic /drocephalus meningitis brain abscess subdural abscess
Three categories on an anatomic basis ◼ Extratemporal extracranial ◼ Bezold abscess ◼ Subperiosteal abscess ◼ Intratemporal ◼ Mastoiditis, labyrinthitis, sensorineural hearing loss, petrositis ◼ Facial paralysis, cholesteatoma, labyrinthine fistula ◼ Intracranial ◼ Epidural abscess, lateral sinus thrombosis, otitic hydrocephalus, ◼ meningitis, brain abscess, subdural abscess
Causes Hyper-function of immune system Infant older Strong bacteria Damaged structures cholesteatoma Unreasonable interventions Drug resistant Poor drainage
Causes ◼ Hyper-function of immune system ◼ Infant, older ◼ Strong bacteria ◼ Damaged structures ◼ cholesteatoma ◼ Unreasonable interventions ◼ Drug resistant, ◼ Poor drainage
Transmission course Pathways of spread Direct extension of infection to structure (bone erosion) Hemogenous routine (microbiologic an host factors Bacteria gain access to intracranial through unsealed gap, inner ear
Transmission course ◼ Pathways of spread ◼ Direct extension of infection to structure (bone erosion) ◼ Hemogenous routine (microbiologic an host factors) ◼ Bacteria gain access to intracranial through unsealed gap, inner ear
1. Eardrum 5 Semicrcular canais B Vestibular nerve 3 Incus Facial Nerve f0 Eustachian tube MF