TY - JOUR
T1 - Electroneurography
T2 - Preoperative facial nerve assessment for tumors of the temporal bone
AU - Kartush, J. M.
AU - Niparko, J. K.
AU - Graham, M. D.
AU - Kemink, J. L.
PY - 1987
Y1 - 1987
N2 - Tumors of the temporal bone and cerebellopontine angle may be associated with subclinical facial nerve degeneration, despite clinically normal facial function. To determine if preoperative neurophysiologic testing might predict postoperative facial function after tumor surgery, preoperative facial electroneurography (ENoG) was performed in 82 patients with confirmed tumors of the temporal bone and cerebellopontine angle. In patients with acoustic neuroma, preoperative ENoG amplitude reduction varied directly with tumor size. In addition, a statistically significant association between impaired postoperative facial function and acoustic neuroma size greter than 2.5 cm was found. However, preoperative ENoG amplitude reduction did not accurately predict postoperative facial function. These findings suggest that factors, such as the type and size of tumor, the microanatomic relationship between the facial nerve and the neoplasm, and/or desynchronization of the evoked motor-unit volley, may effect results obtained with ENoG in this setting.
AB - Tumors of the temporal bone and cerebellopontine angle may be associated with subclinical facial nerve degeneration, despite clinically normal facial function. To determine if preoperative neurophysiologic testing might predict postoperative facial function after tumor surgery, preoperative facial electroneurography (ENoG) was performed in 82 patients with confirmed tumors of the temporal bone and cerebellopontine angle. In patients with acoustic neuroma, preoperative ENoG amplitude reduction varied directly with tumor size. In addition, a statistically significant association between impaired postoperative facial function and acoustic neuroma size greter than 2.5 cm was found. However, preoperative ENoG amplitude reduction did not accurately predict postoperative facial function. These findings suggest that factors, such as the type and size of tumor, the microanatomic relationship between the facial nerve and the neoplasm, and/or desynchronization of the evoked motor-unit volley, may effect results obtained with ENoG in this setting.
UR - http://www.scopus.com/inward/record.url?scp=0023502230&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0023502230&partnerID=8YFLogxK
M3 - Article
C2 - 3118305
AN - SCOPUS:0023502230
SN - 0194-5998
VL - 97
SP - 257
EP - 261
JO - Otolaryngology - Head and Neck Surgery
JF - Otolaryngology - Head and Neck Surgery
IS - 3
ER -