Preoperative and Postoperative Electroneurographic Facial Nerve Monitoring in Patients With Parotid Tumors

Abstract

Electroneurography is a sensitive tool for monitoring clinically silent facial nerve function deficits in the context of preoperative tumor-induced damage and postsurgical early and late follow-up of nerve function.

Correlations between the clinical, histological and neurophysiological examinations in patients before and after parotid gland tumor surgery: verification of facial nerve transmission

“…Danielides et al [ 29 ] as well as Beck and Hall [ 30 ] found the relationship between changes in facial nerve function detected in ENG studies and clinical H–B scoring in 97 % of the patients with Bell’s palsy. We confirmed this high positive correlation in patients with parotid gland tumors at three periods of observation like Bendet et al [ 5 ] and Aimoni et al [ 6 ]. However, it should be taken into consideration that clinical H–B scoring assesses all facial nerve branches generally without the possibility of selective injury evaluation.…”

Prospective Assessment of Risk Factors Influencing Facial Nerve Paresis in Patients after Surgery for Parotid Gland Tumors

“…Aimoni and Bendet presented similar results in patients with salivary gland malignant tumors. This relationship, however, was not found in the case of benign tumors [1,11].…”

The Offprint of an Abnormal Pre-Parotidectomy Electrodiagnostic Finding in a Normally Functioning Facial Nerve: Correlation with Intraoperative Findings, Histology and Postoperative Facial Nerve Function

“…The CMAP is recorded using a bipolar (concentric) pair of needle electrodes placed in the nasolabial fold [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ]. In accordance with the relevant literature [ 5 , 14 , 15 , 16 ], a pathologic finding in ENoG was defined as a latency >4.0 ms in the nerve conduction test ( Figure 1 ). In the qualitative analysis of the EMG, we sought possible signs of muscle degeneration (e.g., positive sharp waves or fibrillation potentials).…”