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Updated: Oct 5, 2025
Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
Published on: March 1, 2015
Prognosis prediction changes based on the timing of electroneurography after facial paralysis
Ki Jin Kwon1, Je Ho Bang1, Sang Hoon Kim1
1Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
Background:
The process of determining the prognosis and subsequent facial nerve decompression has become an important factor in determining the patient's quality of life.
Aim:
In this study, the prognosis of facial paralysis was verified in detail based on the timing of electroneurography (ENOG) and nerve conduction study (NCS).
Materials And Methods:
The ENOG and NCS of 368 facial palsy patients were analyzed. House-Brackmann (HB) scale after 6 months was used as an outcome. For the ENOG, nasalis muscle/levator labii superioris alaeque nasi (NL), and orbicularis oculi (OO) muscle were used and NCS performed using temporal, zygomatic, and buccal branches.
Results:
ENOG at the OO performed 4-6 d after onset was ≤10% (p = .002, 10.0-fold) and showed unfavorable results (when the standard was ≥30%). In addition, the ENOG at the NL performed 13-15 d after onset was ≤10% (p = .001, 10.5-fold) and showed unfavorable results (when the standard was ≥30%).
Conclusions:
The results indicated that ENOG at the OO performed 4-6 d after onset and ENOG at the NL performed 13-15 d after onset had more prognostic value for the outcomes of acute peripheral facial palsy.
