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chapter 6
the ear
Term | Definition |
---|---|
acous/o audi/o | hearing |
tympan/o | eardum |
salping/o | wax |
decongestant | a drug that reduces congestion and swelling of membranes, such as those of the nose and auditory tube in an infection |
histamine | a regulatory body substance released in allergic reactions, causing swelling and inflammation of tissue: seen in hay fever and urticaria (hives) |
ear instillation | introduction of a medicated solution into the external canal, usually administered by drop (gt) or drops (gtt) in the affected ears |
ear lavage | irrigation of the external ear canal, often to remove excessive buildup of cerumen |
cerumen | a waxy substance secreted by glands located throughout the external canal |
otoplasty | surgical repair of the external ear |
cochlear implant | an electronic implanted in the cochlea that provides sound perception to patients with severe or profound sensorineural (nerve) hearing loss in both ears |
auditory prosthesis | any internal or external device that improves or substitutes for natural hearing |
tympanoplasty | surgical procedure to reconstruct the tympanic membrane and/or the auditory ossicles |
stapedectomy | excision of the stapes to correct otosclerosis |
myringotomy | incision into the eardrum, most often for the insertions of a small polyethylene (pe) tube to keep the canal open and prevent fluid buildup, such as occurs in otitis media: also called tympanotomy |
microsurgery | surgery with the use of a microscope used on delicate tissue, such as the ear |
tympanometry | measurement of the compliance and mobility (conductibility) of the tympanic membrane and ossicles of the middle ear by monitoring the response to external airflow pressures |
pneumatic otoscopy | otoscopic observation of the tympanic membrane as air is released into the external auditory meatus: immobility indicates the presence of middle ear effusion (fluid buildup), as occurs as a results of otitis media |
otitis media | inflammation of the middle ear |
BAEP | brainstem auditory evoked potential |
BAER | brainstem auditory evoked response |
PE | polyethylene |
brainstem auditory evoked response (BAER) | electrodiagnostic testing that uses computerized equipment to measure involuntary responses to sound within the auditory nervous system; commonly used to assess hearing in newborns |
brainstem auditory evoked potential (BAEP) | electrodiagnostic testing that uses computerized equipment to measure involuntary responses to sound within the auditory nervous system; commonly used to assess hearing in newborns |
presbyacusis presbycusis | hearing impairment in old age |
audiometry | process of measuring hearing |
audiometer | instrument to measure hearin |
audiogram | record of hearing measurement |
audiologist | hearing professional who specializes in the study of hearing impairments |
deafness | general term for partial or complete loss of hearing |
conductive hearing loss | hearing impairment caused by interference with sound or vibratory energy in the external canal, middle ear, or ossicles |
sensorineaural hearing loss | hearing impairment cause by lesions of dysfunction of the cochlea or cochlear (auditory) nerve |
mixed hearing loss | combination of senorineural and conductive hearing loss |
Meniere's disease | disorder of the internal ear resulting from excessive buildup of endolymph, causing episodes of vertigo, tinnitus, nausea, vomiting, and hearing loss: one or both ears can be affected, and attacks vary in btoh frequency and intensity: |
Acoustic Neuroma (Vestibular Schwannoma) | a benign but life-threatening tumor of the vestibular division of the vestibulocochlear nerve (Cranial Nerve VIII) ; causes vertigo, tinnitus, and hearing loss |