Tympanic Membrane Diseases Flashcards
What are tympanic membrane diseases
Myringitis
Tympanosclerosis
Tympanic membrane perforation
Atrophic scab
What is myringitis
Infectious disease of the tympanic membrane caused by a virus or bacteria
Painful blisters or vesicles on the eardrum
What is the audiometry of the myringitis?
Conductive hearing loss
Hearing testing may not be completed due to client discomfort or pain
What is tympanosclerosis?
Calcium plaques appear on the surface of the tympanic membrane
What is the cause of tympanosclerosis?
Chronic infection (usually if the middle ear)
Direct trauma of the tympanic membrane
A tympanostomy tube
What would audiometry show for tympanosclerosis?
Normal audiogram or slight conductive hearing loss if there is a lot of buildup
What is the ECV in tympanosclerosis?
Normal
What is the definition of a tympanic membrane perforation?
Ruptured tympanic membrane
What is the cause of a tympanic membrane perforation?
Direct trauma
Pressure I the EAC (explosion, hand clapped over the ear)
Infection in middle ear
Excessive pressure buildup
Sizes of tympanic membrane perforations?
Small, medium, and large sized tympanic membrane perforations
Most small traumatic tympanic membrane perforations heal within 3 months
Direct trauma to the TM or an explosion can cause damage to the inner ear
Audiometrical findings of the tympanic membrane perforation
Conductive hearing loss of varying degree
Speech audiometry for TM perforation
SRT and PTA are at a 0-6 dB of each other (a good agreement)
WRS = 96-100%
Tympanometry results for a tympanic membrane perforation
Type B tympanogram
Ear canal volume for tympanic membrane perforation
Large
What is an atrophic scar?
Thin flaccid semitransparent portion of tympanic membrane perforation
Looks like a tympanic membrane perforation because one of its three layers is deficient
