Danielides V, Skevas A, Van Cauwenberge P
Department of Otorhinolaryngology, University of Ioannina, Greece.
Eur Arch Otorhinolaryngol. 1996;253(1-2):35-8. doi: 10.1007/BF00176700.
The purpose of this study was to evaluate the ability of electroneuronography (ENOG), also called evoked electromyography (EEMG), and facial nerve latency testing (FNLT) to assess the prognosis of facial nerve palsy, using the House-Brackmann facial nerve grading system as criterion. From 1988 to 1994 these tests were employed at the ORL Clinic of the University of Ioannina in 250 patients with idiopathic facial nerve palsy. The ENOG test results indicated that when the amplitude of the compound muscle action potentials ranged from 51% to 95% of the normal value, 97% of the patients achieved complete functional recovery (grade I) within at least 2 months. When the muscle action potential decreased to a value below 51% of normal values, prognosis for recovery was considerably worse. FNLT test results indicated that as the latency time extended, the recovery grade of the facial nerve worsened. When latency time was within the normal range (group A patients), about 92% of patients had complete functional recovery. In contrast all patients having either a very extended latency time or unable to be monitored (groups C and D) demonstrated incomplete functional recoveries that ranged from grade II to grade VI. Comparing each test with the House-Brackmann facial nerve grading system, we ascertained that the percent accuracy for ENOG was 97.6%, and that for FNLT was 94.4%.
本研究的目的是，以House-Brackmann面神经分级系统为标准，评估神经电图（ENOG，也称为诱发肌电图，EEMG）和面神经潜伏期测试（FNLT）评估面神经麻痹预后的能力。1988年至1994年期间，约阿尼纳大学耳鼻喉科诊所对250例特发性面神经麻痹患者进行了这些测试。ENOG测试结果表明，当复合肌肉动作电位的幅度为正常值的51%至95%时，97%的患者在至少2个月内实现了完全功能恢复（I级）。当肌肉动作电位降至正常值的51%以下时，恢复预后明显较差。FNLT测试结果表明，随着潜伏期延长，面神经的恢复等级变差。当潜伏期在正常范围内时（A组患者），约92%的患者实现了完全功能恢复。相比之下，所有潜伏期极长或无法监测的患者（C组和D组）均表现出从II级到VI级的不完全功能恢复。将每项测试与House-Brackmann面神经分级系统进行比较，我们确定ENOG的准确率为97.6%，FNLT的准确率为94.4%。
