Self-expanding nitinol stents for the treatment of tracheal collapse in dogs: 12 cases (2001-2004).

Abstract

OBJECTIVE:

To evaluate long-term outcome following nitinol stent placement in dogs with tracheal collapse.

DESIGN:

Retrospective case series.

ANIMALS:

12 client-owned dogs with endoscopically diagnosed tracheal collapse refractory to medical management.

PROCEDURES:

Medical records were reviewed for 12 dogs in which 1 or more self-expanding nitinol stents were placed for the treatment of endoscopically diagnosed tracheal collapse. A total of 17 stents were placed.

RESULTS:

Survival times after stent placement ranged from 1 to 48 months. Three of 12 dogs died within 6 months after stent placement. Nine dogs survived > 1 year after stent placement, and 7 dogs survived > 2 years. Of the deceased dogs, 5 of 9 succumbed to tracheal disease. Other causes of death included congestive heart failure, cerebral neoplasia, cerebrovascular accident, and renal failure. Material failure (stent fracture) was a common complication (5/12 dogs). Other complications reported included excessive granulation tissue within the stent lumen, tracheitis, and pneumonia.

CONCLUSIONS AND CLINICAL RELEVANCE:

Placement of an intraluminal stent with self-expanding nitinol stents was a successful palliative treatment for tracheal collapse in dogs that did not respond to medical management. Disease progression is inevitable, but substantial improvement in respiratory function may be achieved for a period of months to years.

• Authors: Patricia A Sura, Delbert J Krahwinkel
• Journal: Journal of the American Veterinary Medical Association (J Am Vet Med Assoc) Vol. 232 Issue 2 Pg. 228-36 (Jan 15 2008) ISSN: 0003-1488 [Print] United States
• PMID: 18275390 (Publication Type: Journal Article)

Chemical References

• Alloys
• nitinol

Topics

• Alloys
• Animals
• Disease Progression
• Dog Diseases (surgery)
• Dogs
• Female
• Male
• Prosthesis Implantation (methods, veterinary)
• Retrospective Studies
• Stents
• Survival Analysis
• Time Factors
• Tracheal Diseases (surgery, veterinary)
• Treatment Outcome