实验性犬气道肉芽肿及YAG：Nd激光治疗机理的研究

随着内窥镜检查及胸部手术的广泛开展、气管切开后金属插管的较长期使用,气管支气管肉芽肿以及良恶性肿瘤等已为常见疾病。激光治疗气管、支气管疾病在临床上已证明有效,但激光对气道粘膜的作用究竟如何尚鲜见报道。本实验应用机械刺激原理,置异物于大道某一部位,造成持续性刺激而促使该部位生长出炎性肉芽肿,然后以YAG:Nd激光照射汽化之,观察治疗后局部大体及镜下病理变化,旨在为临床激光治疗气道内阻塞性病变提供理论参考。

Experimental study of the mechanism of YAG:Nd laser treatment for canine tracheal granuloma

Canine tracheal granuloma models were achieved by bone fragments inserted two and four weeks prior to the Jaser tre atment. After the vaporization of the granuloma lesions by YAG:Nd laser radiation by power of 20 W and total energy of 640 J, the pathologic changes were examined both by light and electronic microscopes. The results showed that the YAG:Nd laser treatment for the trancheal lesions is effective, dependable, less damage, quick recovery and less bleeding.