Long-Term Nervus Intermedius Dysfunction After Retrosigmoid Vestibular Schwannoma Resection: Incidence, Independent Predictors, and Development of a Nomogram

AND OBJECTIVES: This study retrospectively analyzed long-term nervus intermedius (NI) outcomes after vestibular schwannoma (VS) resection by the retrosigmoid approach and developed a postoperative risk stratification nomogram.

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Audiologists co-managing vestibular schwannoma patients post-surgery should be aware that nervus intermedius dysfunction (affecting taste and facial sensation) is a measurable long-term risk after retrosigmoid resection, and that the published nomogram may help identify high-risk patients for closer follow-up.

Nervus intermedius dysfunction is an under-reported but impactful post-surgical complication of vestibular schwannoma resection, and a validated predictive nomogram could support better pre-operative counseling and post-operative monitoring in multidisciplinary teams.

1. 01Retrospective study examining long-term nervus intermedius dysfunction after retrosigmoid vestibular schwannoma surgery.
2. 02Nervus intermedius dysfunction can cause taste changes, abnormal tearing, dry eye, and facial paresthesia.
3. 03Study identified independent predictors of this complication.
4. 04A predictive nomogram was developed to estimate individual patient risk.
5. 05Findings are relevant to pre-surgical counseling and post-op monitoring in neurotology.

PMID

42615628

DOI

10.1227/neu.0000000000004202.

Journal

Neurosurgery

Publication type

research_article

Evidence level

4

Population

Patients undergoing retrosigmoid vestibular schwannoma resection

Intervention

Retrosigmoid surgical resection of vestibular schwannoma