Veterinary endoscopy clinical cases and placement of Stening® laryngeal prostheses in animals.
Stening® Veterinary
UMA Endoscopy
Veterinary endoscopy
Vet. María Cecilia Ricart
endovete@gmail.com · 15.5837.9215
Date: 17-05-2018
Requesting professional: Dr. Hall, Pablo
Owner: Milani, Alejandra
Patient: Name: UMA · Species: Canine · Breed: Labrador · Sex: female · Age: 10 years and 10 months
Study performed: Laryngo-tracheobronchoscopy
Procedure performed: placement of a laryngeal prosthesis.
Study report
Laryngoscopy:
Mobility: laryngeal paralysis (assessed with a laryngoscope at the minimum anesthetic plane at which inspection could be achieved).
Structure: arytenoid cartilages preserved. Exuberant scarring in the area of the vocal cords (cordectomy performed approximately 1 month and a half ago). Subglottic stenosis.
Tracheobronchoscopy: Mild hyperemia of the tracheal mucosa is observed throughout its course. Normal carina. Dorsal extrinsic compression of the left cranial bronchus that compresses approximately 25% of the lumen. With the consent of the family and the referring colleague, a silicone prosthesis is placed over the cords. It is explained that this is an experimental procedure, and the possible complications expected from the therapy are explained; the family agrees, understanding the risks. The patient recovers without immediate complications: no stridor is perceived.
Laryngeal paralysis is the muscular inability to abduct the arytenoid cartilages during inspiration. In dogs, the most frequent presentation is the acquired form, with a higher prevalence in large and giant breeds and a mean age of 9–10 years. The etiology usually remains hidden. The traditional treatment is surgical and its goal is to increase the opening of the glottis. A therapeutic alternative is presented with the placement of a closed silicone laryngeal prosthesis (stent) in a dog. Case presentation: a canine, Siberian Husky, male, 12 years old, presented for consultation at the Teaching Hospital due to episodes of respiratory difficulty in situations of stress or exertion and changes in phonation. On general and specific physical examination, the only abnormality found was inspiratory stridor. Laryngeal paralysis was suspected and confirmed by laryngoscopy. At the owners' request to avoid surgery, an experimental alternative was performed in canines (a technique similar to that used in laryngeal pathologies in humans) by placing a closed silicone prosthesis.
