Facial Nerve Monitoring during Canal Wall Up Mastoidectomy and Tympanoplasty
JI Shufang
CHEN Xuehua
LI Kafan
CAI Xiaojian
XU Yaodong
Abstract：Objective To study the value of facial nerve monitoring during canal wall up mastoidectomy with tympano?plasty. Methods Canal wall up mastoidectomy was performed in 21 cases of chronic suppurative otitis media through facial re?cess approach with intraoperative facial nerve monitoring. Stimulus thresholds before and after opening the facial recess were recorded.Results Abnormally anterior course of facial canal was seen in 1 case. In the 21 cases in which canal wall up sur?gery was completed, the stimulus thresholds at the mastoid segment ranged from 0. 38~0. 90 mA(mean=0.66±0.16 mA)be?fore opening the facial recess and 0.16~0.43 mA(mean=0.32±0.09 mA)after facial recess was opened(p<0.05). Facial ca?nal defects were found in 4 cases under microscopes. There was no immediate or delayed facial paralysis after surgery. All patients obtained dry ear at six months follow up. Conclusion Intraoperative facial nerve monitoring can help surgeons identify and locate the facial nerve, facilitating broad facial recess access in canal wall up surgery while effectively protecting the facial nerve.
Keywords：Canal wall up mastoidectomy with tympanoplastyFacial nerve monitoring
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 587-589 )