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23 terms

Ch 5: Disorders of Hearing in Children

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Air Conduction Audiometry
Testing hearing by introducing the tone into the ear canal, with the sound waves then traveling to the drum membrane st the end of the canal (as opposed to bone conduction).
Bone Conduction Audiometry
In hearing testing, introduction sound waves directly into the cochlea via the bones of the skull.
Cochlea
The snail shaped part of the inner ear containing the sensory organs of hearing.
Mixed Hearing Loss
A hearing loss caused by both conductive and sensorineural problems.
Congenital
Present at birth.
Endogenous
Caused by genetic factors.
Chromosomes
A structure containing genes that trasmit genetic information.
Hearing Impairment
Any loss or abnormality of structure or function of the auditory system.
Consanguineous
Between blood relatives.
Exogenous
Acquired or caused by factors outside of genes.
Prenatally
Preceding birth.
Perinatally
The period surrounding birh, between the 29th week of gestation to one to four weeks after birth.
Postnatally
Occurring after birth.
Organogenesis
The development of organs, which in humans occurs during the fetal period.
Sequelae
Conditions that follow or occur as a consequence of another condition (e.g. Illness) or event (e.g. trauma).
APGAR
A five point evaluation system for identifying the status of newborns.
Otitis Media
Inflammation of the middle ear.
Effusion
Fluid that has exuded into the middle ear space,
Spondaic Words
Two syllable words pronounced with equal tress on each syllable.
Habituates
Gradual decrease in responsiveness following repeated exposure to a stimulus.
Auditory Brainstem Response
An elctrophysiological response to sounds that results in 5 to 7 peaks that appear within 10ms after the presentation of the signal (usually a click).
Screening
The detection of individuals at risk for a condition (e.g. Hearing loss, language disorder).
Cochlear Implant
A coil and electrodes surgically placed in the inner ear and connected to an external transmitter/signal processor. It is intended to produce sensations of sound for owe with profound hearing impairment.