J Vet Sci.  2008 Mar;9(1):91-93. 10.4142/jvs.2008.9.1.91.

The Safety and efficacy of a new self-expandable intratracheal nitinol stent for the tracheal collapse in dogs

• Kim JY
• Han HJ
• Yun HY
• Lee B
• Jang HY
• Eom KD
• Park HM
• Jeong SW

• KMID: 1102958
• DOI: http://doi.org/10.4142/jvs.2008.9.1.91

Abstract

To evaluate the potential utility of a self-expandable intratracheal nitinol stent with flared ends for the treatment of tracheal collapse in dogs, endotracheal stenting therapy was performed under fluoroscopic guidance in four dogs with severe tracheal collapse. During the 4 to 7 month followup, after stent implantation, clinical signs, including dyspnea and respiratory distress, dramatically improved in all dogs. The radiographs showed that the implanted stents improved the tracheal collapse, and there were no side effects such as collapse, shortening or migration of the stents. In conclusion, the self-expandable intratracheal nitinol stents provided adequate stability to the trachea and were effective for attenuating the clinical signs associated with severe tracheal collapse.

Keyword

dog; nitinol stent; tracheal collapse

MeSH Terms

*Alloys
Animals
Dog Diseases/*surgery
Dogs
Female
Male
Prosthesis Implantation/adverse effects/veterinary
Stents/adverse effects/*veterinary
Tracheal Stenosis/surgery/*veterinary

Figure

• 

  Fig. 1 Lateral radiographs before (a) and after (b) intratracheal placement of self expandable nitinol stent with flare ends in a dog with tracheal collapse. Collapsed trachea is extended and sustained (white arrow).

Reference

1. Ayres SA, Holmberg DL. Surgical treatment of tracheal collapse using pliable total ring prostheses: results in one experimental and 4 clinical cases. Can Vet J. 1999. 40:787–791.

2. Buback JL, Boothe HW, Hobson HP. Surgical treatment of tracheal collapse in dogs: 90 cases (1983-1993). J Am Vet Med Assoc. 1996. 208:380–384.

3. Culp WTN, Weisse C, Cole SG, Solomon JA. Intraluminal tracheal stenting for treatment of tracheal narrowing in three cats. Vet Surg. 2007. 36:107–113.

4. Gellasch KL, Dá Costa Gómez T, McAnulty JF, Bjorling DE. Use of intraluminal nitinol stents in the treatment of tracheal collapse in a dog. J Am Vet Med Assoc. 2002. 221:1719–1723.

5. Hafner B, Mann W, Heussel CP, Scherhag A, Schlegel J, Kauczor HU. Self-expanding nitinol stents in proximal tracheal stenosis. Laryngorhinootologie. 2000. 79:165–170.

6. Jeong SH, Jeong SW. Application of new external total ring prostheses made by drip chamber of intravenous administration set in normal dogs. Korea J Vet Res. 2004. 44:137–141.

7. Johnson L. Tracheal collapse. Diagnosis and medical and surgical treatment. Vet Clin North Am Small Anim Pract. 2000. 30:1253–1266.

8. Lee CH, Kweon OK, Nam TC. Modified extraluminal prostheses applied to the canine tracheal collapse. Korean J Vet Clin Med. 2000. 17:266–269.

9. Mittleman E, Weisse C, Mehler SJ, Lee JA. Fracture of an endoluminal nitinol stent used in the treatment of tracheal collapse in a dog. J Am Vet Med Assoc. 2004. 225:1217–1221.

10. Moritz A, Schneider M, Bauer N. Management of advanced tracheal collapse in dogs using intraluminal self-expanding biliary Wallstents. J Vet Intern Med. 2004. 18:31–42.

11. Quellet M, Dunn ME, Lussier B, Chailleux N, Hélie P. Noninvasive correction of a fractured endoluminal nitinol tracheal stent in a dog. J Am Anim Hosp Assoc. 2006. 42:467–471.

12. Radlinsky MG, Fossum TW, Walker MA, Aufdemorte TB, Thompson JA. Evaluation of the Palmaz stent in the trachea and mainstem bronchi of normal dogs. Vet Surg. 1997. 26:99–107.

13. Sasano S, Onuki T, Adachi T, Oyama K, Ikeda T, Kanzaki M, Kuwata H, Sakuraba M, Matsumoto T, Nitta S. Nitinol stent for the treatment of tracheobronchial stenosis. Jpn J Thorac Cardiovasc Surg. 2001. 49:311–316.

14. Vinograd I, Klin B, Brosh T, Weinberg M, Flomenblit Y, Nevo Z. A new intratracheal stent made from nitinol, an alloy with "shape memory effect". J Thorac Cardiovasc Surg. 1994. 107:1255–1261.