摘要
将16条狗分成神经植入组(n=6)、神经吻合组(n=5)及对照组(n=5),切断左侧喉返神经造成单侧喉麻痹,植入组以左侧舌下神经袢埋入声带内收肌中,吻合组以左舌下神经袢与左喉返神经内收肌支吻合,对照组不作神经修复术。术后5～6个月,暴露植入或吻合的神经、右喉返神经、两侧甲杓肌,分别测定其兴奋性。植入神经、吻合处近远端神经干兴奋性均与正常神经元差异,再神经支配的甲杓肌兴奋性与正常甲榴肌无差异,但均低于神经的兴奋性,失神经的甲杓肌兴奋性最低。因此,在功能性电刺激治疗声带麻痹中,刺激电极安置在修复的神经上比肌肉处为佳。
The recurrent laryngeal nerves of 16 dogs were sectioned to paralyze the vocal cord on the left side. The ansa hypoglossi nerve was cut on the same side, its proximal end was implanted into the thyroarytenoid (TA) muscle belly on the left side in six animals. It was anastomosed with the adductor branch of the recurrent larygeal nerve on the left side in five animals and the other five didn't receive reinnervated operations. After a period of five to six months, the operated areas were reexplored. The excitability values of the implanted nerve, anastomosed proximal and distal nerves, right recurrent laryngeal nerve, normal TA muscle, reinnervated TA muscle and denervated TA muscle were tested respectively in 16 dogs. The results indicated that the excitability values of the implanted and anastomosed nerves were equivalent to those of the normal nerves and were significantly higher than those of the reinnervated muscle which were equivalent to those of the normal muscle. The excitability values of the denervated TA muscles were lowest.
出处
《第二军医大学学报》
CAS
CSCD
北大核心
1992年第2期154-157,共4页
Academic Journal of Second Military Medical University
关键词
声带麻痹
再神经支配
喉肌
兴奋性
vocal cord paralysis
laryngeal muscles
laryngeal nerves
excitability
rcinnervation
dogs
