Instrument Selection Flashcards

Which hearing aid style is typically recommended for patients with severe-to-profound hearing loss who require maximum power output?

Answer: Behind-the-ear (BTE) with custom earmold

BTE instruments with custom earmolds provide the highest power output and are best suited for severe-to-profound hearing losses.

A patient with severe arthritis reports difficulty manipulating small controls. Which hearing aid feature MOST addresses this limitation?

Answer: Automatic volume and program adjustment without manual controls

Automatic adjustment eliminates fine motor manipulation, making the instrument manageable for patients with reduced dexterity.

Which hearing aid coupling style BEST preserves the natural pinna effect and localization cues?

Answer: Open-fit receiver-in-canal (RIC)

Open-fit RIC instruments leave the ear canal largely unoccluded, allowing the pinna to collect sound naturally and preserve directional cues.

A completely-in-canal (CIC) hearing aid is CONTRAINDICATED for which patient?

Answer: Patient with active chronic ear drainage

Active ear drainage is a contraindication for deep-canal instruments because moisture damages electronics and the drainage may indicate a condition requiring medical treatment.

What is the PRIMARY acoustic advantage of a receiver-in-canal (RIC) instrument over a traditional BTE with earmold?

Answer: Reduced feedback risk due to greater distance between microphone and receiver

In RIC instruments, the microphone sits behind the ear while the receiver is in the canal, creating greater physical separation that reduces acoustic feedback.

Which patient characteristic MOST strongly indicates the need for a custom earmold over a standard dome with a RIC instrument?

Answer: Severe hearing loss requiring high gain

Severe hearing loss requiring high gain makes a sealed custom earmold necessary to prevent feedback and ensure adequate low-frequency amplification.

A patient with bilateral symmetrical mild-to-moderate sensorineural hearing loss requests a monaural fitting to save cost. What should the specialist advise?

Answer: Binaural fitting is strongly recommended for superior localization and speech understanding in noise

Binaural fitting provides significantly better sound localization, speech understanding in noise, and overall benefit compared to monaural fitting for symmetrical losses.