Instrument Selection Flashcards

When fitting a patient with a steeply sloping high-frequency hearing loss, which gain prescription approach is MOST appropriate?

Answer: Substantially increased high-frequency gain with minimal low-frequency amplification

A steeply sloping loss requires significantly more gain in the high frequencies where the loss is greatest while avoiding over-amplification of low frequencies where hearing may be near normal.

During a hearing aid evaluation, a patient's aided word recognition score improves significantly compared to unaided scores. This finding MOST indicates:

Answer: The patient is a good candidate who will likely achieve real-world benefit from amplification

Improved word recognition with amplification is a positive prognostic indicator that the patient will receive meaningful benefit from hearing instruments.

Which patient would receive the LEAST benefit from a directional microphone system?

Answer: A patient who is primarily homebound and watches television in a quiet room

A primarily homebound patient in a controlled quiet environment rarely faces competing noise from behind, making directional microphone benefit minimal in their daily life.

The occlusion effect is MOST commonly reported by which patient group?

Answer: Patients with good low-frequency hearing wearing occluding earmolds

Patients with intact low-frequency hearing who wear occluding earmolds perceive their own voice as hollow because bone-conducted vocal energy cannot escape the sealed canal.

In which listening environment is a telecoil MOST beneficial?

Answer: Venues with installed hearing loop (induction loop) systems such as theaters or churches

Telecoils pick up electromagnetic signals from installed hearing loop systems, delivering a direct clean signal that bypasses environmental background noise.

A patient has asymmetrical hearing loss with word recognition of 20% in one ear. How should this affect the bilateral instrument selection strategy?

Answer: The poor ear may require a different fitting target and BiCROS routing should be considered

A poor word recognition score predicts limited benefit from conventional amplification in that ear, potentially making BiCROS routing or a specialized fitting approach more appropriate.

Which audiometric finding MOST strongly indicates a physician referral BEFORE proceeding with instrument selection?

Answer: Unilateral sudden sensorineural hearing loss of 50 dB occurring within 72 hours

Sudden sensorineural hearing loss is a medical emergency requiring immediate physician referral for possible corticosteroid treatment to maximize hearing recovery.