The aim of this study was to evaluate the safety and short-term predictive value of continuous intraoperative monitoring of the dorsal cochlear nucleus action potential (DNAP) using a 4-contact depth electrode during retrosigmoid vestibular schwannoma resection, and to compare its accuracy in predicting postoperative hearing outcomes with that of standard auditory brainstem response (ABR).
✦ The floor
Discussion
Signed responses from readers of the wire.
Dorsal cochlear nucleus action potential monitoring during retrosigmoid vestibular schwannoma surgery may offer predictive value for short-term hearing preservation, but evidence is preliminary; no change to standard intraoperative monitoring protocols is warranted until larger validation studies are available.
If confirmed in larger cohorts, this monitoring technique could give surgeons real-time feedback to improve hearing preservation rates in vestibular schwannoma surgery.
- 01Evaluated dorsal cochlear nucleus (DCN) action potential monitoring as a hearing-outcome predictor during hearing-preservation surgery.
- 02Surgery type was retrosigmoid approach for vestibular schwannoma removal.
- 03Focus is on short-term (not long-term) hearing outcomes post-operatively.
- 04Adds to the small but growing literature on advanced intraoperative neurophysiological monitoring for skull-base surgery.
- 05Published in the Journal of Neurosurgery (JNS), a peer-reviewed surgical journal.
Intraoperative DCN action potential monitoring can predict short-term hearing outcomes in hearing-preservation retrosigmoid surgery for vestibular schwannoma.
studypartially supported- PMID
- 42913514
- DOI
- 10.3171/2026.5.JNS253148.
- Journal
- Journal of Neurosurgery
- Publication type
- research_article
- Evidence level
- 4
- Population
- Patients undergoing hearing-preservation retrosigmoid surgery for vestibular schwannoma
- Intervention
- Intraoperative dorsal cochlear nucleus action potential monitoring
Primary outcomes
Short-term hearing preservation outcomes