retrocochlear
Pronunciation: ret-row-KOCK-lee-ar
Referring to auditory pathway disorders located beyond the cochlea, including the auditory nerve and brainstem structures.
Full Definition
Retrocochlear pathology affects the auditory nervous system beyond the cochlea, including the eighth cranial nerve, brainstem nuclei, and central auditory pathways. These disorders typically present with disproportionately poor speech recognition relative to pure-tone thresholds, abnormal auditory brainstem response patterns, and acoustic reflex abnormalities. Common retrocochlear conditions include acoustic neuromas, multiple sclerosis, and brainstem lesions. Audiological testing reveals rollover on speech recognition testing, prolonged ABR wave latencies, and absent or abnormal acoustic reflexes. Suspected retrocochlear pathology requires immediate medical referral for neurological evaluation and imaging.
Usage
Usage note: Always use as an adjective; distinguish from 'cochlear' and 'precochlear' anatomical references.
In Context
- "The patient's asymmetric hearing loss and poor speech scores suggested retrocochlear pathology requiring MRI evaluation." — Audiological diagnostic report
- "Retrocochlear screening protocols include ABR testing and acoustic reflex measurements." — Clinical practice guidelines