Ayres S A, Holmberg D L
Department of Clinical Studies, Ontario Veterinary College, University of Guelph.
Can Vet J. 1999 Nov;40(11):787-91.
Pliable total ring prostheses were created from the polyvinyl chloride drip chambers of intravenous administration sets. The total ring prostheses were placed in one clinically normal research dog and in 4 client-owned dogs diagnosed with tracheal collapse. The research dog was euthanized one month after placement of the prostheses. Histopathological analysis of the trachea adjacent to the prostheses revealed a mild inflammatory response. The follow-up period for the clinical cases was from 4 months to 11 years. Radiographs taken and fluoroscopy performed 1 day to 5 months after surgery revealed improvement or resolution of the tracheal collapse. One dog was asymptomatic 28 weeks following surgery. Two dogs died 7 and 9 years after surgery, with one requiring intermittent medical management for coughing. They were euthanized for nonrespiratory illness. One dog had a persistent nonproductive cough, due to collapse of the mainstem bronchi, when last evaluated 4 months postoperatively. Pliable total ring prostheses provided adequate stability to the trachea and had the advantage of conforming to the trachea and being easy to create, place, and suture.
可弯曲的全环假体由静脉输液器的聚氯乙烯滴壶制成。将全环假体植入1只临床健康的实验犬和4只被诊断为气管塌陷的客户拥有的犬体内。实验犬在植入假体1个月后实施安乐死。对假体附近气管进行组织病理学分析，结果显示有轻度炎症反应。临床病例的随访期为4个月至11年。术后1天至5个月拍摄的X光片及进行的荧光透视检查显示气管塌陷有所改善或得到解决。1只犬在术后28周无症状。2只犬在术后7年和9年死亡，其中1只因咳嗽需要间歇性药物治疗，它们因非呼吸系统疾病实施安乐死。1只犬在术后4个月最后一次评估时，因主支气管塌陷持续干咳。可弯曲的全环假体为气管提供了足够的稳定性，具有与气管贴合以及易于制作、放置和缝合的优点。
