Brachycephalic airway syndrome (BOAS) in dogs
Brachycephalic airway syndrome is a set of airway problems in flat-faced breeds: narrow nostrils, a long soft palate and extra throat tissue that block airflow.
Last updated: October 2026 · 2 sources · see sources
Signs to watch for
- Snoring and noisy breathing
- Tiring quickly
- Overheating
- Gagging or regurgitating
- Sleep trouble
- Collapse in severe cases
Trouble breathing, collapse, repeated vomiting, not peeing, or a seizure that lasts more than a few minutes needs a vet right away. See when to see a vet.
How vets diagnose it
Your vet looks at the nostrils and, under anesthesia, examines the throat and soft palate. [2]
How it's treated
Surgery can widen the nostrils, shorten the palate and remove saccules. Keeping a lean weight and avoiding heat also help. [2]
What it costs to diagnose and manage
| Item | Typical US price | Src |
|---|---|---|
| Diagnosis (exam and tests) | $300–$800 | [1] |
| Treatment | $1,500–$5,000 | [1] |
These are typical US ranges from the sources listed. Your pet's costs depend on how severe things are, the tests your vet recommends, your pet's size and where you live. Ask your vet for a written estimate.
Outlook
Earlier surgery often gives better results before secondary changes develop. [2]
Common questions
What is brachycephalic airway syndrome (BOAS) in dogs?
Brachycephalic airway syndrome is a set of airway problems in flat-faced breeds: narrow nostrils, a long soft palate and extra throat tissue that block airflow.
What are the signs of brachycephalic airway syndrome (BOAS)?
Common signs include: snoring and noisy breathing, tiring quickly, overheating, gagging or regurgitating, sleep trouble, collapse in severe cases.
How do vets diagnose brachycephalic airway syndrome (BOAS)?
Your vet looks at the nostrils and, under anesthesia, examines the throat and soft palate.
How is brachycephalic airway syndrome (BOAS) treated?
Surgery can widen the nostrils, shorten the palate and remove saccules. Keeping a lean weight and avoiding heat also help.
How much does brachycephalic airway syndrome (BOAS) cost to treat?
Diagnosis (exam and tests): $300–$800; Treatment: $1,500–$5,000. Costs vary with severity, tests, your pet's size and where you live.
Related
This page is general information for pet owners, not veterinary advice. Talk to your vet about your own pet.