Intraoperative mapping and monitoring of sensory vagal fibers during vagal schwannoma resection

Catherine F. Sinclair, Maria J. Téllez, M. Angeles Sánchez Roldán, Mark Urken, Sedat Ulkatan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Vagal schwannomas are rare, benign tumors. Intermittent intraoperative neuromonitoring via selective stimulation of splayed motor fibers running on the schwannoma surface to elicit a compound muscle action potential has been previously reported as a method of preserving vagal motor fibers. In this case report, vagal sensory fibers are mapped and continuously monitored intraoperatively during high vagus schwannoma resection using the laryngeal adductor reflex (LAR). Mapping of nerve fibers on the schwannoma surface enabled identification of sensory fibers. Continuous LAR monitoring during schwannoma subcapsular microsurgical dissection enabled sensory (and motor) vagal fibers to be monitored in real time with excellent postoperative functional outcomes. Laryngoscope, 129:E434–E436, 2019.

Original languageEnglish
Pages (from-to)E434-E436
Issue number12
StatePublished - 1 Dec 2019
Externally publishedYes


  • Neurolaryngology
  • neural monitoring
  • schwannoma
  • swallowing/dysphagia


Dive into the research topics of 'Intraoperative mapping and monitoring of sensory vagal fibers during vagal schwannoma resection'. Together they form a unique fingerprint.

Cite this