Hearing Aid Dispenser Exam Study Guide with Complete Solutions Acquired Congenital Hearing Loss - Correct Answer Loss present at birth that has progressed over time.Acute Suppurative Otitis Media - Correct Answer Middle Ear infection more severe shorter duration.Type B Tymp Aero Otitis Media - Barotrauma - Correct Answer Injury resulting from changes in ambient air pressure between outer and middle ear.Malfunctioning Eustachian Tube Alaising - Correct Answer an effect that causes different signals to become indistinguishable (or aliases of one another) when sampled.Aphasia - Correct Answer Communication problems with both receptive and expressive Articulation Curve - Correct Answer Correct percentage of words a listener can identify as the words are presented-also called the speech audiogram.Asymmetrical Hearing Loss - Correct Answer Loss in both ears but one is worse than the other Atresia - Correct Answer Closed Ear Canal Auditory Deprivation - Correct Answer The longer we go with a hearing impairment, without getting that information to where it belongs the more prone we become to permanently loose our ability to discriminate certain speech cues.Causes of tinnitus - Correct Answer Sudden exposure to loud noise, long time exposure to loud noise, physical trama to head or neck, Hypertension, Acoustic Neroma, thyroid disease, vacular disorder, TMJ disorder, Ear infection, impacted cerumen, Nutricianal dificiency, Aneurysm, MS, prescription drugs 1 / 2
Central Deafness - Correct Answer hearing loss or impairment resulting from defects in the central nervous system (as in the auditory cortex) rather than in the ear itself or the auditory nerve— compare conduction deafness, nerve deafness. Damage or disorder within brain stem, tumor or abscess Central Masking - Correct Answer When masking is presented to the non-test ear (NTE) it may cause a shift in the test ear. What is that called?Cerumen - Correct Answer Ear wax Cholesteatoma - Correct Answer Tumor in Middle Ear. May perforate TM into External Ear Canal Chronic Otitis Externa - Correct Answer Chronic Infection with swelling & secretion from Yellow to Green Complex Sound - Correct Answer a sound composed of a number of sounds of different frequencies.Conductive Hearing loss - Correct Answer Obstruction or breakdown in Outer and/0r Middle Ear.Congenital Sensorineural Loss - Correct Answer Present at birth, may be inherited, mother may have suffered flu or measles during pregnancy, most probably progress over time.Consonants - Correct Answer Weaker Speech Sounds. Spoken from the LIPS not from the larynx.Consonants are higher pitched than vowels (they lie more to the right on the chart). Consonants are spoken more softly than vowels (they lie higher on the chart, in the lower decibel ranges).Decibel - Correct Answer a unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale.Diffraction - Correct Answer describes how waves bend, or change direction, as they travel around the edges of obstacles.Digital signal processor - Correct Answer The computer of the hearing aid
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