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Investigation of a coaxial bipolar nerve stimulator for intraoperative motor nerve monitoring
Author(s) -
Dankle Jon A.,
Wiegand David A.
Publication year - 1994
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1002/lary.5541040516
Subject(s) - coaxial , nerve stimulator , biomedical engineering , medicine , nerve stimulation , cerebellopontine angle , stimulation , anesthesia , engineering , electrical engineering , radiology , magnetic resonance imaging
Intraoperative cranial motor nerve monitoring has improved the preservation of cranial nerve function during cerebellopontine angle and skull base surgery. Further improvements are needed to provide greater selectivity and sensitivity during intraoperative motor nerve stimulation. Use of bipolar stimulator probes has been recommended by previous investigators. The authors hypothesized that a coaxial bipolar stimulator design might provide important advantages over existing designs. This study compared the results of bipolar and monopolar stimulation using a coaxial stimulator probe in a rat model and during neurotologic procedures. The coaxial bipolar probe was superior in selectivity, thereby permitting useful multichannel monitoring. The coaxial design may also offer advantages over previous bipolar stimulator designs.