Èlectroneuromyographiс parameters as prognostic criteria in facial nerve palsy outcome

In the article we present the results of the retrospective clinico-electrophysiological analysis of 182 patients suffering from the idiopathic neuropathy of the facial nerve (Bell`s palsy). The comparison of the most common electromyographical (ENMG) predictors of outcomes was made. It was demonstrated that the most sensitive method in the acutest period (less then 5 days) is the level of excitability of the nerve, in the acute period (less then 14 days) – estimation of M-answer amplitude loss, and from the 21st day – the presence of denervation in muscles. The most specific electromyographical approach to estimate the therapy efficiency is an analysis of the M-answer amplitude and latency. In conclusion, neurologists have the possibility to predict the outcome and to control the therapy efficiency in any period of the disease. The correlation dynamics ÈNMG sensitivity settings – NLN on different dates can be used to determine the volume of ÈNMG – the NLN study depending on the timing for the treatment of patients.