Tracheal collapse is characterized as dorsoventral flattening of tracheal rings, resulting from progressive cartilage degeneration, which can affect the cervical and intrathoracic trachea, being more common in middle-aged and small breeds. The aim of the present study was to review the pathophysiological, clinical aspects, and diagnostic methods of tracheal collapse in dogs. Tracheal collapse occurs due to the progressive degeneration of the cartilage of the trachea, the extraluminal pressure exceeds the capacity of sustaining the rings, leading to collapse and narrowing of the lumen, hindering the passage of air. Cough is the main clinical sign seen in animals with tracheal collapse. The correct evaluation and grading of the tracheal collapse will determine the best type of treatment. Most dogs respond well to clinical treatment. However, those who have unresponsive respiratory impairment can benefit from surgical intervention. Bronchoscopy is the best technique to assess the degree of involvement of the trachea, however, the animal needs to be sedated with general anesthesia. The tangential radiographic projection can be used for complementary assessment of the trachea, however, it must be performed with caution, since it can accentuate the clinical signs. The prognosis is directly related to the degree of involvement of the trachea and the presence or not of secondary pathologies.
Cite this paper
Torezani, L. C. , Junior, J. G. P. , Kaiser, B. B. , Teixeira, M. B. , Santiago, M. P. K. , Cota, J. M. and Pereira, C. M. (2021). Tracheal Collapse in Dogs. Open Access Library Journal, 8, e7257. doi: http://dx.doi.org/10.4236/oalib.1107257.
Maggiore, A.D. (2014) Tracheal and Airway Collapse in Dogs. Veterinary Clinics of North America: Small Animal Practice, 44, 117-127.
https://doi.org/10.1016/j.cvsm.2013.09.004
Clarke, D.L. (2018) Interventional Radiology Management of Tracheal and Bronchial Collapse. Veterinary Clinics of North America: Small Animal Practice, 48, 765-779. https://doi.org/10.1016/j.cvsm.2018.05.010
Ettinger, S.J., Kantrowitz, B. and Brayley K. (2004) Doenças da Traqueia. In: Ettinger, S.J. and Feldman, E.C., Eds., Tratado de Medicina Interna Veterinária, 5th Edition, Guanabara, Rio de Janeiro, 1096-1112.
Nelson, A.W. (2007) Afecções da traqueia e dos brônquios. In: Slatter, D., Ed., Manual de cirurgia de pequenos animais, 3th Edition, Editora Manole, São Paulo, 858-863.
Done, S.H., Clayton-Jones, D.G. and Price, E.K. (1970) Tracheal Collapse in the Dog: A Review of the Literature and Report of Two New Cases. Journal of Small Animal Practice, 11, 743-750. https://doi.org/10.1111/j.1748-5827.1970.tb05579.x
Sun, F., Usón, J., Ezquerra, J., Crisóstomo, V., Luis, L. and Maynar, M. (2008) Endotracheal Stenting Therapy in Dogs with Tracheal Collapse. The Veterinary Journal, 175, 186-193. https://doi.org/10.1016/j.tvjl.2007.01.011
Beltrán, K.G., Pascon, J.P.E. and Mistieri, M.L.A (2020) Radiographic Evaluation of Tracheal Collapse in Dogs by Compressive Technique. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 72, 799-806. https://doi.org/10.1590/1678-4162-11324
Alexander, K. (2014) Laringe, Faringe e Traqueia. In: Thrall, D.E., Ed., Diagnóstico de radiologia veterinária, 6th Edition, Elsevier Saunders, Rio de Janeiro, 489-499.
Coelho, M.R., Muzzi, R.A.P.L., Silva, A.C., Muzzi, L.A.L. and Figeuredo, V.C. (2014) Atualizações sobre tosse em cães. Revista Científica Eletrônica de Medicina Veterinária, 22, 1-20.
Coyne, B.E. and Fingland, R.B. (1992) Hypoplasia of the Trachea in Dogs: 103 Cases (1974-1990). Journal of the American Veterinary Medical Association, 201, 768-772.
Harvey, C.E. and Fink, E.A. (1982) Tracheal Diameter: Analysis of Radiographic Measurements in Brachycephalic and Nonbrachycephalic Dogs. Journal of the American Animal Hospital Association, 18, 570-576.
Sessegolo, G.M. (2013) Endoprótese (stent) intraluminal autoexpansivo, Adaptada por traqueoscopia, em cães com colapso de traqueia. Tese de Mestrado em Medicina Veterinária-Universidade Federal do Rio Grande do Sul.
