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Use of Nitinol Stents for End-Stage Tracheal Collapse in Dogs


  • Presented in part at the 2009 American College of Veterinary Surgeon's Symposium, October 8–10, Washington, DC, and the 8th annual meeting of the Society of Veterinary Soft Tissue Surgery, June 18–20, Salem, MA.

Corresponding Author

April M. Durant, DVM, Department of Small Animal Clinical Sciences, University of Tennessee, 2407 River Drive, Knoxville, TN 37996




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).


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.


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.


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.

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