術後性顔面神経麻痺の筋電図学的研究

概要

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Clinical and electromyographical studies were made on 23 cases which developed facial palsy following middle ear surgery. Electromyographic examination was performed 2 weeks, 1 month, ent. The results were as follows : 1. Based on the observation during the surgical sy, it was considered that complete severance of the facial nerve was very rare. The most common causes of the palsy were partial destruction of the bony wall of the facial canal, injury to the peripheral lissues and hematoma in the canal. 2. In most cases, fibrillation voltage was found at the test 1 month postoperatively. Fibrillation voltage itself was not necessary a sign of poor prognosis of the palsy. If there was any evidence very of the palsy could be expected in some extent. 3. In the cases of mild palsy, polyphasic or high amplitude voltage appeared in relatively early stage. In severe cases, these activities were found after the period between 6 months and 1 year. If there were a good number of discharges, it was a sign of better prognosis of the palsy and vise versa. 4. Electromyographic examination was thought to be significant for estimating the degree and prognosis of postoperative facial palsy. The test should be repeated at least 2 weeks and 1 month postoperatively. 5. For those cases which were diagnosed to have poor prognosis, a surgical intervention should be of value.
社団法人日本耳鼻咽喉科学会の論文