Intraluminal use of dual nitinol stent for complete collapse of trachea in a Maltese: case report

Uso intraluminal de stent de nitinol Dual para colapso completo de tráquea en un maltés: reporte de caso

Anamnesis: Canine patient, Maltese, female, castrated, 4 years old and 5 Kg. of weight. The main reason for consultation was cough and severe respiratory distress. Clinical and laboratory findings: During the clinical evaluation the patient presented cyanosis, severe inspiratory and expiratory stridor, goose-honking especially after an emotion. An examination was performed through a bronchoscopy, revealing a dynamic decrease in the diameter of the tracheal lumen, severe collapse in the cervical and thoracic portions. Treatmen approach: Due to the severity of the tracheal collapse, the implantation of a nitinol stent was decided. The choice of the stent is fundamental; It was necessary to make a measurement of the tracheal diameter and length, to minimize side effects and rejections. The trachea presented variability of the diameter at thoracic level for this reason it was decided to use a dual stent, the stent was placed on direct observation using a pediatric bronchoscope. Conclusion: We present a case where a dual stent was used, indicated in cases where the diameter of the trachea varies, yielding excellent results since it was adjusted to the different tracheal diameters that the patient presented at the cervical and thoracic levels.