CSCD 4301 Study Guide - Final Guide: Conductive Hearing Loss, Eustachian Tube, Sensorineural Hearing Loss
15 May 2017
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Document Summary
Kramer workbook corresponding pages to chapters 8, 9 and 10. Interpretation of tymps, select auditory disorders, screening for hearing impairment, genetics, and behavioral hearing testing for infants and children. Kramer: chapter 8 (to page 236), 9, 10. Interpretation of tympanometry, select disorders, screening, genetics: immittance refers to tymps, reflexes, gradient, pressure, etc. Exam 3: non-behavioral testing, shows conductive pathologies (cid:498)objective(cid:499) but some tester error is always possible. Impedance: opposition to the energy flow: high impedance = greater opposition to the flow of energy, complex sum of mass reactance, stiffness reactance and friction (measured in ohms) * (peak pressure: normal results = normal compliance at 0 dapa (atmospheric pressure, normal results = no middle ear problem, not normal hearing, abnormal = conductive problem (not conductive hearing loss) Negative pressure there is a vacuum in the middle ear. Positive pressure the eardrum is bulging outward. * peak air pressure on tympanogram matches the air pressure in the middle ear.
