Hearing Aid Dispensers Written Exam Questions With Complete Solutions To Score A+

What is the major function of the earmold? {Ans: Acoustic enhancement in the ear canal.}What tympanogram shows normal middle ear pressure but reduced mobility?(Fixation of the ossicular chain) {Ans: Type As.}What frequency is emphasized naturally do to the large & or open vent in the SIE or RIC hearing aids? {Ans: High frequency.}Component in input & output compression. {Ans: Feedback circuit.}What tympanogram shows restricted TM mobility? (Otitis media) {Ans: Type B.}If the acoustic reflex test shows 5dB, what type of loss should be suspected? {Ans: Non-organic loss.}___ is good to find hearing loss. ___ & SRT are within 5 to 10 dB difference. {Ans: PTA}What is the most common earmold material that has durability & easy modification? {Ans: Silicone 2,000}This vent in a non-occluding earmold enhances high frequencies. {Ans: Parallel vent.}What type of loss is favorable to medical treatment. {Ans: Conductive}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: {Ans: Otosclerosis}A large perforation of TM can commonly cause how