Electromyography: prognosis and evaluation of the efficiency of therapy for Bell's palsy

• Main Authors: N. G. Savitskaya, D. S. Yankevich, A. V. Ostafiychuk, E. V. Pavlov
• Format: Article
• Language: Russian
• Published: IMA-PRESS LLC 2011-09-01
• Series: Nevrologiâ, Nejropsihiatriâ, Psihosomatika
• Subjects: facial neuropathy; prognosis; electromyography
• Online Access: https://nnp.ima-press.net/nnp/article/view/321
• ISSN: 2074-2711; 2310-1342

The paper presents the results of clinical and electromyographic studies in 182 patients with idiopathic facial neuropathy (BellXs palsy). The most commonly studied parameters of electroneuromyography (ENMG) were compared to determine a good or poor prognosis for recovery. The most sensitive parameters were shown to be nerve excitability threshold in the acutest period (up to 5 days), M-response amplitude fall ratio on the affected and intact sides and reversibility of impaired irritability in the acute period (on days 10 to 14), and muscle denervation changes starting on day 21. The most sensitive ENMG parameters for the evaluation of the efficiency of performed therapy were changes in M-response amplitude and latency. Thus, ENMG can estimate disease prognosis and monitor treatment efficiency.