Use of nitinol stents for end-stage tracheal collapse in dogs

Vet Surg. 2012 Oct;41(7):807-17. doi: 10.1111/j.1532-950X.2012.01037.x. Epub 2012 Sep 7.


Objective: To report bronchoscopic placement of nitinol stents (Vet Stent-Trachea®) for improvement of end-stage clinical signs in dogs with tracheal collapse.

Study design: Case series.

Sample population: Dogs (n = 18).

Methods: Medical records (January 1, 2004-October 31, 2008) were searched for dogs with a diagnosis of tracheal collapse; 18 dogs met inclusion criteria. Tracheal diameter was compared before and after stent deployment. Stent dimensions were compared after stent deployment and at radiographic follow-up.

Results: There was a significant difference in the minimum tracheal diameter when initial and post deployment tracheal diameters were compared (P = .003). Stent length was significantly shorter at follow-up when compared to post deployment measurements (P = .004). Owner assessment of outcome was available for all dogs with 11.1% mortality within 60 days. Complications were documented in 9 dogs.

Conclusions: Use of a nitinol stent (Vet Stent-Trachea®) in dogs with end-stage tracheal collapse is associated with a fair to good outcome despite significant temporal stent fore shortening after bronchoscopic placement.

MeSH terms

  • Alloys*
  • Animals
  • Dog Diseases / surgery*
  • Dogs
  • Female
  • Male
  • Prosthesis Implantation / methods
  • Prosthesis Implantation / veterinary*
  • Retrospective Studies
  • Stents / veterinary*
  • Tracheal Diseases / veterinary
  • Tracheal Stenosis / surgery
  • Tracheal Stenosis / veterinary*


  • Alloys
  • nitinol