Hearing Aid Dispenser Top Predicted Questions and Correct Answers

Typanometry - What identifies a measure of of compliance of the TM (ear drum)? +200 H2O to -200 H2O - Typanograms probe tip measures from...... Type A Tympanogram - A (normal) Intact TM(ear drum). Requires the presents of air in the middle ear, an intact ossicles, an normal Eustachian tube. Type As Typanogram(shallow). - Transfer of energy is stiffened. Stiffened movement of the TM. Ossicular fixation, compliance is reduced, typanosclerossis(calcium deposits of the TM). CONDUCTIVE HEARING LOSS problem. Type Ad Tympanogram(deep) - Intact TM, normal Eustachian tube function, energy flow is reduced. 1). Ossicular discontinuity (incomplete chain) flaccid movement of the membrane, or 2). a Monomeric membrane(behind the membrane). Type B Tympanogram - A canal obstruction, TM perforation, middle ear fluid(includes possible fluids from infection,blood[from trama]. Also possible improper insertion of probe tip could give a false positive. Type C Typanogram - The same as type B, but also shows substantial negative pressure in the middle ear space. Patient feels "fullness" or "hollowness", and decreased hearing. Requires medical referral. 3000, 4000, and 6000 Htz - Individuals with noise induced hearing loss have a "V Notch at..... Interaural intenuation - The loss of sound energy as it travels from the test ear to the nontest ear. 1000 Htz - Bone conduction testing begins at what frequency? Pure tone threshold testing means: - The lowest intensity sound a patient hears 50% of the time. Excessive ambient noises - What are greater for the lower frequencies than the higher frequencies? It is easier to hear when a sound stops than when it begins. - The descending technique is preferred because: Air Bone Gap - Name the difference in the bone conduction and the air conduction. The Air-Bone Gap is: - Always better better hearing by bone conduction than by air conduction, never the reverse. The Air-Bone Gap indicates: - Impairment to the conductive portion of the hearing mechanism. Hear well equally at all frequencies. - The human ear can NOT: the Dynamic Range. - The intensity range is