Question

high-frequency audiometry (>8 khz) is most useful for:

• ototoxicity monitoring
• presbycusis diagnosis
• speech recognition
• conductive loss assessment

Explanation:

Analyze high-frequency audiometry

Using the Clinical Audiometry knowledge point, high-frequency audiometry tests hearing thresholds above \(8\text{ kHz}\) (typically up to \(16\text{–}20\text{ kHz}\)). The base of the cochlea, which processes these ultra-high frequencies, is highly susceptible to early damage from ototoxic medications (such as cisplatin or aminoglycosides) before the damage progresses to lower frequencies critical for speech.

Evaluate the options

• Ototoxicity monitoring: This is the primary clinical application, as high-frequency hearing loss serves as an early warning sign of cochlear damage.
• Presbycusis diagnosis: While age-related hearing loss affects high frequencies, standard audiometry up to \(8\text{ kHz}\) is sufficient for diagnosis.
• Speech recognition: Speech sounds primarily fall within the \(250\text{ Hz}\) to \(8\text{ kHz}\) range.
• Conductive loss assessment: Conductive hearing loss typically affects low-to-mid frequencies and is assessed using standard air and bone conduction testing.

Answer:

• (A) Ototoxicity monitoring (Correct answer)
• (B) Presbycusis diagnosis
• (C) Speech recognition
• (D) Conductive loss assessment