Tracheal collapse is a devastating disease primarily affecting small breed dogs. When medical management fails, surgical therapy with cervical tracheal rings and/or tracheal stents may be used for palliation of clinical signs. Tracheal rings may be preferred in cases of cervical or thoracic inlet collapse in order to prevent stent-associated complications such as granulation tissues, persistent cough or stent fracture. However, as tracheal collapse is considered progressive, dogs that initially improved following tracheal ring placement may have recurrent intra-thoracic airway obstruction that requires an intra-thoracic stent for palliation. The purpose of this study is to evaluate the characteristics and outcome of dogs that received tracheal stents following earlier placement of tracheal rings.
The electronic medical record was searched for dogs that underwent placement tracheal rings. The records were retrieved, and records of dogs that subsequently underwent placement of a tracheal stent were further evaluated for breed, age at placement of rings and duration between rings and stent were identified.
Forty-seven dogs underwent tracheal ring placement during the study period, including 36 Yorkshire terriers and 11 Non- Yorkshire terriers. Two dogs had both rings and stents placed during a single hospitalization prior to discharge. One dog was euthanized after ring placement following the development of suspected ARDS. Forty-four dogs were discharged following isolated tracheal ring placement. Nine Yorkshire terriers (19%) subsequently underwent tracheal stent placement a median of 3.6 years (range 1.3 to 5.8 years) following initial placement of tracheal rings. Dogs that underwent both tracheal rings and stenting were significantly (p = 0.03) younger than dogs that did not ultimately have both procedures at the time of the original ring placement (5.6 ±1.3 years; 7.6±2.6 years). One dog that underwent both procedures had a seizure and died at home two days following discharge. Two dogs subsequently were euthanized due to progressive airway obstruction from stent-associated granulation tissue, and one dog died due to pneumonia.
Tracheal stenting may be performed after earlier ring placement in dogs with progressive airway disease. Younger age at initial ring placement as well as being a Yorkshire terrier may increase the likelihood undergoing subsequent tracheal stenting.
Tufts Cummings School of Veterinary Medicine
Friday, June 15
9:00 AM – 9:15 AM
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