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Middle Ear Differential Diagnosis of Ear Disease External Ear • Cerumen impaction • Auricular hematoma • Perichondritis • Otiis Externa • Otomycosis • Foreign Body •External ear canal laceration -temporal bone fracture Middle Ear • Acute otitis media • Mastoiditis •Serous/chronic otitis media • Hemotympanum •Tympanic membrane perforation •Tympanic membrane retraction • Cholesteatoma Inner Ear • Sensorineural hearing loss • Vestibular neuritis • Meniere’s Disease • Vestibular migraine Anatomy of the ear Conductive Hearing Loss Acute Otitis Media • Peak incidence AOM is between 6 and 18 months – AOM affects 40%-50% of children by age 1 – By age 3 years majority (>80%) of children have had 1 episode of AOM • ~ 40% of pediatric office visits in first 5 years related to otitis media • ~5-10% of well visits associated with diagnosis of OME Acute Otitis Media Diagnosis Certain diagnosis of AOM meets all 3 of the criteria: • Presence of Purulent Middle Ear Effusion • Rapid onset • Signs and symptoms of middle-ear inflammation – – – – Otalgia No pain with pulling of ear TMJ pain Difficulty sleeping due to pain Acute Otitis Media Diagnosis • Pulling at the Ears (not reliable): – Zero percent of children with ear pulling as the primary sign had an ear infection – Ear pulling + fever: only 15% had ear infections – Why do kids pull their ears? • Itching • Teething • Is ear pulling associated with ear infection. Baker RB. Pediatrics. 1992 Dec;90(6):1006-7 • Exploration • Comfort • Diagnostic accuracy and the observation option in • Habit acute otitis media: the Capital Region Otitis Project. • Pain Gurnaney H, Spor D, Johnson DG, Propp R. Int J Pediatr Otorhinolaryngol. 2004 Oct;68(10):1315-25 Acute Otitis Media Diagnosis Presence of Purulent Middle Ear Effusion • Exam- Unobstructed ear canal and good light! • Bulging of the tympanic membrane • Limited or absent mobility of the tympanic membrane – Pneumotoscopy – Tympanometry • Air-fluid level behind the tympanic membrane • Otorrhea (purulent) Misdiagnosis of Acute OM • Over-reliance on history • TM color does not predict AOME-crying makes most tympanic membranes red • Failure to evaluate tympanic membrane mobility (pneumatic otoscopy) • Poor light from otoscope (bulb & battery) • Failure to remove cerumen • Inappropriate sized speculum • Lack of experience Acute Otitis Media Treatment • Why do we treat AOM? – Quality of Life – Suppurative Complications • Intracranial Complications: – – – – – – Meningitis Extradural abscess Subdural empyema Lateral sinus thrombosis Brain abscess Otitic hydrocephalus • Once treated, when do we follow-up? • Extracranial Complications: – – – – – Mastoiditis Petrositis Facial Paralysis Perforation of the TM Hearing loss • CHL • SNHL – Labyrinthitis – If asymptomatic, follow-up is to ensure resolution of fluid – This process can take up to 3 months (74%) Complications of Acute OM • Intracranial Complications: – – – – Meningitis Extradural abscess Subdural empyema Lateral sinus thrombosis – Brain abscess – Otitic hydrocephalus • Extracranial Complications: – – – – – Mastoiditis Petrositis Facial Paralysis Perforation of the TM Hearing loss • CHL • SNHL – Labyrinthitis Acute Mastoiditis • May or may not be associated with subperiosteal abscess • Protrusion of the auricle may be secondary to osteitis of the mastoid cortex without erosion/ abscess Coalescent Mastoiditis Acute Mastoiditis Management • IV antibiotics • Incision and drainage of subperiosteal abscess • Myringotomy and tube placement • Cortical mastoidectomy traditionally recommended AOM vs. OME • Acute Otitis Media • Otitis Media with Effusion – Pus behind TM – Acute infection – Multiple severe complicaitons – Fluid behind TM – May result from AOM – Less sever complications • • • • Mastoiditis Meningitis Brain abscess Facial paralysis – Treat with antibiotics – Ear tubes if recurrent • Hearing loss • Scarring/atrophy of TM • Tympanosclerosis – Do not treat with antibiotics – Ear tubes if persistent or chronic Otitis Media with Effusion • Tympanic membrane characteristics – Translucent or opaque – Gray, white, yellow, or pink color – Neutral or retracted position – Reduced mobility, responds to negative pressure on pneumatic otoscopy – Effusion present Resolution of Middle Ear Fluid Otitis Media with Effusion Treatment • Intervention based on severity of hearing loss, child’s developmental status, parent preference – Aggressive management of “at-risk” population • Watchful waiting for at least 3 months in “non at-risk” population – “Paradise Tube Article” studies only healthy, non at-risk children – Nasal steroids may help – Nasal decongestants/antihistamines of no proven use – Antimicrobials/steroids not indicated Paradise JL., et al: Tympanostomy Tubes and Developmental Outcomes at 9 to 11 Years of Age N Engl J Med. 363 (3):248-261, 2007. Otitis Media with Effusion Treatment • Audiogram if fluid > 3 months (chronic) – If normal hearing periodic re-evaluation until clear; more aggressive intervention if hearing loss, behavior problems or TM changes • Surgery- Tubes with or without adenoids – Tubes initially only • Adenoidectomy if nasal obstruction or infection problems or if past hx of tubes – Repeat surgery--adenoidectomy +/-tubes AOM vs. OME • Acute Otitis Media • Otitis Media with Effusion – Pus behind TM – Acute infection – Multiple severe complicaitons – Fluid behind TM – May result from AOM – Less sever complications • • • • Mastoiditis Meningitis Brain abscess Facial paralysis – Treat with antibiotics – Ear tubes if recurrent • Hearing loss • Scarring/atrophy of TM • Tympanosclerosis – Do not treat with antibiotics – Ear tubes if persistent or chronic (chronic) Types of TM Findings Serous otitis media Normal TMMedia Acute Otitis Mucoid Otitis Media Tympanic Membrane Perforation Myringosclerosis Tympanic Membrane Perforation • Multiple causes − − − − Trauma (welder’s slag) Tubes Infection Barotrauma • Potential complications − Otorrhea − Hearing loss − Cholesteatoma • Treatment − − − − Auidiogram Dry ear precautions Ciprodex for otorrhea Tympanoplasty if no spontaneous resolution (~6 months) − 90-95% success rate Tympanic Membrane Retraction • Negative pressure pulls TM inward • Caused by eustachian tube dysfunction • Most likely in superior TM (“Prussack’s space”) • Loss of middle ear volume • Loss of amplification • Physical exam: − Microscope: can see retraction − Monocular otoscope: oval/angled/rotated TM − Angled/horizontal malleus • Complications: − − − − Serous otitis media Hearing loss Damage to ossicles Cholesteatoma Tympanic Membrane Retraction Tympanic Membrane Retraction Cholesteatoma • Dermoid cyst in middle ear space • Recurrent otorrhea/infection in one ear • Causes: − Epithelial rest (congenital) − Retraction of TM with migration of epithelium into middle ear − Perforation/trauma • Physical exam: − Squamous debris and granulation tissue − “like a bomb went off” − May see “pearl” • Complications: − − − − − Hearing loss Destruction of ossicles Facial paralysis Intracranial extension Vertigo Cholesteatoma • Work-up: − Audiogram − CT Temporal bones without contrast • Treatment: − Ciprodex for otorrhea − Dry ear precautions − Surgery Mulitple surgeries required Inner Ear Differential Diagnosis of Ear Disease External Ear • Cerumen impaction • Auricular hematoma • Perichondritis • Otiis Externa • Otomycosis • Foreign Body •External ear canal laceration -temporal bone fracture Middle Ear • Acute otitis media • Mastoiditis •Serous/chronic otitis media • Hemotympanum •Tympanic membrane perforation •Tympanic membrane retraction • Cholesteatoma Inner Ear • Sensorineural hearing loss • Vestibular neuritis • Meniere’s Disease • Vestibular migraine • BPPV Inner Ear Pathology • Key symptoms: • Treatment for HL − Sensorineural hearin gloss − Hearing aids − Tinnitus − Hearing aids − Vertigo • Work-up: − Audiogram − MRI of internal auditory canal with and without contrast − +/- CT temporal bones − +/-ENG − Hearing aids − Cochlear implant • Treatment for vertigo − Meclizine − Valium − Vestibular exercises Sensorineural Hearing Loss Summary • Ear pathology complex • Symptoms, age, type of hearing loss can help focus differential • Remember that otoscope distorts exam • Dry ear precautions always a good idea • No shame in ENT referral Questions? 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