Prognostic Evaluation of the Facial Palsy Using R1 Wave of Blink Reflex

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概要

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• The blink reflex has distinct advantages over the conventional tests because it reflects the functional status of the entire nerve, including the intratemporal segment, which is known to be the most fragile portion of the facial nerve. The aim of this study is to compare the accuracy in judging the severity of facial palsy between ENoG and blink reflex and to evaluate the utility of analysis of R1 wave in blink reflex as prognostic indicator for patients with facial palsy.Electroneuronography (ENoG) and blink reflex (amplitude and latency of R1 wave) were carried out in 50 patients. The patients treated by stellate ganglion block were classified into three groups: Group I scored more than 90 points (full score is 100 points) within 2 weeks, Group II scored more than 90 points over 2 weeks, and Group III scored less than 90 points. The examinations were performed at the first visit, and 10 days, 2, 4, 6 weeks after the onset of facial palsy.There were no significant differences of ENoG amplitude in three groups at the first visit and 10 days after the onset of disease. The patients whose R1 wave were obtained at the first visit were seen in Group I and Group II, but not in Group III. Recovery of R1 amplitude was dependent on the degree of cure of patient's disorder.The results of this study indicate that analysis of R1 latency and amplitude of blink reflex provide valuable information for evaluation of the prognosis of patients with peripheral facial palsy.

• 一般社団法人 日本ペインクリニック学会の論文

一般社団法人 日本ペインクリニック学会 | 論文

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