Term
Functions of the Outer Ear |
|
Definition
1. Protect more delicate structures 2. Amplify high frequency sounds 3. Sound localization |
|
|
Term
Components of the Outer Ear |
|
Definition
1. Pinna (Auricle) 2. External Auditory Canal (EAC) 3. Tympanic Membrane |
|
|
Term
|
Definition
Abnormal smallness of the pinna, Down Syndrome |
|
|
Term
|
Definition
Absence of the pinna, Down Syndrome |
|
|
Term
|
Definition
|
|
Term
|
Definition
Congentical absent or complete closure of the ear canal, Treacher Collins Syndrome |
|
|
Term
|
Definition
Epithelial mounds or pedunculated skin that arise near the front of the ear around the tragus |
|
|
Term
|
Definition
|
|
Term
Atresia Audiogram Characteristics |
|
Definition
Usually flat conductive loss, moderately severe-severe loss, unilateral or bilateral |
|
|
Term
|
Definition
An infection in the skin of the external auditory canal, swimmers ear, can be painful, treated with antibiotics |
|
|
Term
|
Definition
Excessive build up of ear wax in the external ear canal, water and cotton swaps and push wax father in canal, can produce mild-moderate conductive hearing loss |
|
|
Term
|
Definition
|
|
Term
Disorders of the External Auditory Meatus |
|
Definition
• Atresia • External Otitis • Impacted Cerumen • Foreign Bodies • Tumors/Cysts • Collapsed Ear Canal |
|
|
Term
|
Definition
Tumors usually aren't malignant and usually aren't removed if they aren't affecting anything; cysts are a fluid filled sac |
|
|
Term
|
Definition
Putting supra-aural headphones on collapse ear canal can produce a "fake" conductive loss, use insert earphones,
usually not more that 15-30dB loss, maybe a greater dip at 2000Hz |
|
|
Term
Disorders of the Tympanic Membrane |
|
Definition
Perforations (central, attic, marginal), Tympanosclerosis |
|
|
Term
Causes for Tympanic Membrane Perferations |
|
Definition
Traumatic perforations, to relieve pressure from middle ear infections |
|
|
Term
|
Definition
In pars tensa portion of TM |
|
|
Term
|
Definition
|
|
Term
|
Definition
At the edge of the margin of the membrane |
|
|
Term
|
Definition
Surgical repair of a perforated tympanic membrane, graft using fascia |
|
|
Term
|
Definition
Thickening of the tympanic membrane as a result of a middle ear infection, does not respond well to surgical or medical treatment |
|
|