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用11只狗,分成实验组(7只)及对照组(4只),均切断左侧喉返神经和左侧喉上神经外支造成单侧喉麻痹。实验组将颈拌(舌下神经拌)主支的各亚分支植入声带内收肌中,对照组不作此神经修复术。6个月后行喉镜检查、喉肌电图检查、肌收缩力测定、组织化学检查及运动终板细胞化学电镜观察,证实实验组声带内收肌获得有效的再神经支配,声带内收为预计亚分支再神经支配的结果,未见吸气性声带内收现象。对照组声带内收肌无再神经支配征象。
A total of 11 dogs were divided into experimental group (n = 7) and control group (n = 4). All of them cut off the left recurrent laryngeal nerve and the left lateral laryngeal nerve branches to form unilateral laryngeal paralysis. In the experimental group, the sub-branches of the main branch of the cervical mixture (hypoglossal nerve) were implanted into the adductor muscle of the vocal cord, while the control group did not make this nerve repair. Six months later, laryngoscopy, laryngeal EMG examination, muscle contractility, histochemical examination and end-stage chemotactic electron microscopy were performed to confirm that the experimental group received effective re-nerve innervating the vocal cord, Sub-branch is expected to be the result of innervation, no evidence of inspiratory vocal cord adduction. The control group vocal cord adduction without signs of re-nerve.