Experimental Study on Excitability of Thyroarytenoid Muscle after Reinnervation
- VernacularTitle:狗声带内收肌再神经支配后兴奋性研究
- Author:
Hongliang ZHENG
;
Zhaoji LI
;
Shuimiao ZHOU
;
Shizhi XIAO
;
Wu WEN
;
Jin YAN
- Publication Type:Journal Article
- Keywords:
vocal cord paralysis;
laryngeal muscles;
laryngeal nerves;
excitability;
rcinnervation;
dogs
- From:
Academic Journal of Second Military Medical University
1982;0(02):-
- CountryChina
- Language:Chinese
-
Abstract:
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.
