Hearing Aid Dispensers Written Exam|graded A

A large perforation of TM can commonly cause how many dB of loss. 30 dB What type of loss is favorable to medical treatment. Conductive 00:06 01:36 Carhart Notch appearing at 2 KHz. BC test is poorer than the actual sensorineural response in the low frequencies. Caucasian middle-aged women are most at risk. Worse for pregnant women, who can experience a rapid decrease in hearing ability: Otosclerosis ___ is good to find hearing loss. ___ & SRT are within 5 to 10 dB difference. PTA Component in input & output compression. Feedback circuit. This vent in a non-occluding earmold enhances high frequencies. Parallel vent. What is the most common earmold material that has durability & easy modification? Silicone 2,000 What is the major function of the earmold? Acoustic enhancement in the ear canal. Provides comparison between unaided & aided output. Functional gain. What frequency is emphasized naturally do to the large & or open vent in the SIE or RIC hearing aids? High frequency. What tympanogram shows significant negative pressure & normal mobility? Type C. What tympanogram shows restricted TM mobility? (Otitis media) Type B. What tympanogram shows normal middle ear pressure but reduced mobility?(Fixation of the ossicular chain) Type As.