Audiology Final

Pathology of small or absent pinna

Microtia and anotia

Site of lesion for microtia and anotia

Outer ear auricle

Hearing loss for microtia and anotia

None

OAE result for microtia and anotia

Yes

Tympanogram for microtia and anotia

Type A

Pathology of no ear canal opening

Atresia

Site of lesion for atresia

Outer ear ear canal

Hearing loss for atresia

Conductive

OAE result for atresia

No

Tympanogram for atresia

Type B

Pathology with bony growths in canal

Osteoma and exostosis

Site of lesion for osteoma and exostosis

Outer ear ear canal

Hearing loss for osteoma and exostosis

Conductive

OAE result for osteoma and exostosis

No

Tympanogram for osteoma and exostosis

Type B

Pathology of ear canal blockage

Impacted cerumen or foreign object

Site of lesion for cerumen or foreign object

Outer ear ear canal

Hearing loss for cerumen or foreign object

Conductive

OAE result for cerumen or foreign object

No

Tympanogram for cerumen or foreign object

Type B

Pathology of outer ear swelling

Otitis externa and otomycosis

Site of lesion for otitis externa or otomycosis

Outer ear ear canal

Hearing loss for otitis externa or otomycosis

Conductive

OAE result for otitis externa or otomycosis

No

Tympanogram for otitis externa or otomycosis

Type B

Pathology of large eardrum hole

Tympanic membrane perforation

Site of lesion for perforation

Tympanic membrane

Hearing loss for perforation

Conductive

OAE result for perforation

No

Tympanogram for perforation

Type B

Pathology with white plaques on eardrum

Tympanosclerosis

Site of lesion for tympanosclerosis

Tympanic membrane

Hearing loss for tympanosclerosis

None

OAE result for tympanosclerosis

Yes

Tympanogram for tympanosclerosis

Type As

Pathology of eustachian tube dysfunction

Eustachian tube dysfunction

Site of lesion for eustachian tube dysfunction

Middle ear eustachian tube

Hearing loss for eustachian tube dysfunction

Mild conductive

OAE result for eustachian tube dysfunction

No

Tympanogram for eustachian tube dysfunction

Type C

Pathology with fluid without infection

Otitis media with effusion

Site of lesion for OME

Middle ear cavity

Hearing loss for OME

Slight to mild conductive

OAE result for OME

No

Tympanogram for OME

Type B

Pathology with fluid and infection

Acute otitis media

Site of lesion for acute otitis media

Middle ear cavity

Hearing loss for acute otitis media

Mild to moderate conductive

OAE result for acute otitis media

No

Tympanogram for acute otitis media

Type B

Pathology of long term infection

Chronic otitis media

Site of lesion for chronic otitis media

Middle ear cavity and tympanic membrane

Hearing loss for chronic otitis media

Mild to moderate conductive

OAE result for chronic otitis media

No

Tympanogram for chronic otitis media

Type B

Pathology with dead skin cell accumulation

Cholesteatoma

Site of lesion for cholesteatoma

Middle ear tympanic membrane

Hearing loss for cholesteatoma

Mild conductive

OAE result for cholesteatoma

No

Tympanogram for cholesteatoma

Type B

Pathology of stapes fixation

Otosclerosis

Site of lesion for otosclerosis

Middle ear stapes in oval window

Hearing loss for otosclerosis

Mild to severe conductive

OAE result for otosclerosis

No

Tympanogram for otosclerosis

Type As

Pathology of ossicular chain disruption

Ossicular disarticulation

Site of lesion for disarticulation

Middle ear ossicles

Hearing loss for disarticulation

Conductive

OAE result for disarticulation

No

Tympanogram for disarticulation

Type Ad

Pathology from ototoxic drugs

Ototoxicity

Site of lesion for ototoxicity

Inner ear outer hair cells

Hearing loss for ototoxicity

Sensorineural

OAE result for ototoxicity

No

Tympanogram for ototoxicity

Type A

Age related hearing loss

Presbycusis

Site of lesion for presbycusis

Inner ear cochlea outer hair cells

Hearing loss for presbycusis

Sensorineural

OAE result for presbycusis

No

Tympanogram for presbycusis

Type A

Pathology from noise exposure

Noise induced hearing loss

Site of lesion for NIHL

Inner ear cochlea outer hair cells

Hearing loss for NIHL

Sensorineural

OAE result for NIHL

No in high frequencies

Tympanogram for NIHL

Type A

Pathology known as great imitator

Otosyphilis

Site of lesion for otosyphilis

Inner ear cochlea spinal fluid

Hearing loss for otosyphilis

Sensorineural

OAE result for otosyphilis

No

Tympanogram for otosyphilis

Type A

Pathology with fluid imbalance

Endolymphatic hydrops

Site of lesion for hydrops

Inner ear vestibular system

Hearing loss for hydrops

Sensorineural

OAE result for hydrops

No

Tympanogram for hydrops

Type A

Pathology with vertigo and low frequency loss

Meniere's disease

Site of lesion for Meniere's

Inner ear cochlea and vestibular system

Hearing loss for Meniere's

Sensorineural

OAE result for Meniere's

No

Tympanogram for Meniere's

Type A