Prognosis prediction changes based on the timing of electroneurography after facial paralysis

Abstract

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.

Chinese Abstract

背景：确定预后和随后进行面神经减压的过程已成为决定患者生活质量的重要因素。

目的：本研究基于神经电图（ENOG）时间和神经传导研究（NCS）对面瘫预后进行详细验证。

材料与方法：对368例面瘫患者的ENOG和NCS进行分析。将6 个月后的 House-Brackmann (HB) 量表用作表示结果。对鼻肌/上唇和鼻翼上提肌 (NL) 和眼轮匝肌 (OO) 肌肉进行ENOG, 对颞支、颧支和颊支进行 NCS。

结果：发病后 4-6 天在 OO 处进行的 ENOG 为 ≤10%（p = .002, 10.0 倍）并显示不利的结果（当标准为 ≥ 30% 时）。此外, 发病后 13-15 天对NL 进行的 ENOG为 <10%（p = .001, 10.5 倍）并显示不利的结果（当标准为 ≥30% 时）。

结论：结果表明, 在发病后 4-6 天对OO 的 进行的ENOG, 以及在发病后 13-15 天对NL进行的ENOG, 对急性周围性面瘫治疗结果具有较大的预后价值。

Keywords:

• Facial palsy
• electroneurography (ENOG)
• NCS

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the Korea Health Industry Development Institute.