To screen cochlear function specifically in the 2000 to 8000 Hz region, for example after noise exposure, the most appropriate otoacoustic emission modality is:

• A Transient evoked otoacoustic emissions (TEOAE)
• B Distortion product otoacoustic emissions (DPOAE) ✓
• C Spontaneous otoacoustic emissions
• D Click-evoked ABR Wave V amplitude

Explanation

DPOAEs are elicited by two simultaneous pure tones and can be measured frequency by frequency across 2000 to 8000 Hz, making them ideal for mapping high-frequency outer hair cell damage such as a noise-induced 4 kHz notch. TEOAEs, elicited by a broadband click, provide reliable information mainly below 4000 to 5000 Hz and are used more for general screening. Spontaneous emissions occur in only about half of normal ears and cannot be elicited on demand.

Reference: Glasscock-Shambaugh, Surgery of the Ear, 6th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.