Question

which speech audiometry measure is most sensitive to retrocochlear pathology? *

word recognition score (wrs) rollover
uncomfortable loudness level (ucl)
speech reception threshold (srt)
most comfortable level (mcl)

Explanation:

Define retrocochlear pathology and speech measures

Retrocochlear pathology refers to disorders occurring beyond the cochlea, primarily affecting the auditory nerve (eighth cranial nerve) or central auditory pathways. Speech audiometry measures include Word Recognition Score (WRS), Uncomfortable Loudness Level (UCL), Speech Reception Threshold (SRT), and Most Comfortable Level (MCL).

Analyze the sensitivity of each option

• WRS rollover: This phenomenon occurs when word recognition performance decreases significantly as the presentation level of speech increases beyond the patient's optimal listening level. This is a classic diagnostic indicator highly sensitive to retrocochlear lesions (such as vestibular schwannomas).
• UCL, SRT, and MCL: These measures assess loudness tolerance, speech hearing thresholds, and preferred listening levels, respectively. While they provide useful clinical information, they are not highly sensitive or specific diagnostic indicators for retrocochlear pathology.

Answer:

• (A) Word Recognition Score (WRS) rollover (Correct answer)
• (B) Uncomfortable Loudness Level (UCL)
• (C) Speech Reception Threshold (SRT)
• (D) Most Comfortable Level (MCL)