Levine S A, Lindsay W A, Beck K A
Department of Surgical Sciences, University of Wisconsin-Madison 53706.
Vet Surg. 1987 May-Jun;16(3):241-4. doi: 10.1111/j.1532-950x.1987.tb00946.x.
A female llama was presented at 4 days of age with severe dyspnea resulting from bilateral choanal atresia. A tracheostomy was performed before surgical treatment of the airway obstruction. Although the choanal atresia was successfully corrected, tracheal stenosis secondary to mucosal necrosis, malacia of the cartilage rings, and proliferation of intraluminal granulation tissue at and distal to the tracheal stoma developed. The affected segment of the trachea was resected and an end-to-end anastomosis was performed, but the lumen again became obstructed by granulation tissue. A silicone "T-tube" was placed in the trachea to provide a patent airway and intraluminal support. The llama has done well for 12 months with this prosthesis, and the complications that are often seen with long-term use of traditional tracheostomy tubes have not developed.
一只雌性美洲驼在4日龄时因双侧后鼻孔闭锁出现严重呼吸困难。在对气道阻塞进行手术治疗前进行了气管切开术。尽管后鼻孔闭锁成功矫正，但气管造口处及其远端继发于黏膜坏死、软骨环软化和腔内肉芽组织增生的气管狭窄出现了。切除了气管的受累节段并进行了端端吻合，但管腔再次被肉芽组织阻塞。在气管内放置了一个硅胶“T形管”以提供通畅的气道和腔内支撑。这只美洲驼使用这个假体已经健康存活了12个月，且未出现长期使用传统气管切开管时常见的并发症。
