Airway Surgery.
Brachycephalic Obstructive Airway Syndrome
What is Brachycephalic Obstructive Airway Syndrome (BOAS)?
Brachycephalic Obstructive Airway Syndrome commonly known as ‘BOAS’ is a breed-related condition affecting the airways of “squished” faced breeds. Breeds commonly affected by BOAS include French Bulldogs, Australian Bulldogs, English Bulldogs, Shih Tzus, Pekingese, Boxers, Pugs, Cavalier King Charles Spaniels, Boston Terriers, Brucels Griffon, Llasa Apso amongst others.
BOAS affected breeds have difficulty breathing in air due to the narrowing of the upper airways. By attempting to breath more air in there is an increase in intrathoracic pressure contributing to further physical traumatisation of the upper airways, voice box, windpipe and stomach. This irritation and trauma can also cause increased salivation and mucous production which can become foamy, making the act of breathing even more difficult. The negative pressure can cause gastric reflux, aspiration pneumonia, hiatal hernias, upset gastro biome and other clinical signs.
Video: DR Andres explains BOAS in further detail
What causes breathing problems in flat-faced dogs?
The main congenital defects which characterise BOAS include:
- Stenotic nares: Narrow, “pinched” nostrils.
- Elongated and thickened soft palate: An unusually long soft palate that extends into the entrance of the larynx (voice box), reducing the amount of airflow, often resulting in snorting sounds.
- Caudal aberrant turbinates: The small bony structures within the nose (turbinates) extend too far beyond the nasal passage inhibiting normal airflow.
- Hypoplastic trachea: Narrowed, malformed, voice box and windpipe.
- Everted laryngeal saccules: Where part of the larynx itself obstructs airflow.
- Enlarged tonsils contribute to further reduction in airflow diameter.
- Enlarged tongue (macroglossia): Selective breeding for the “flat faced” appearance often results in a tongue that is too big for the skull, creating an obstructive barrier for airflow.
How do I know if my dog has BOAS?
Some of the common signs of BOAS include:
- Loud breathing, snorting or snoring.
- High pitched noises similar to wheezing.
- Poor quality sleep/sleep apnea where the patient seems to choke as they fall asleep causing them to frequently wake up.
- Preference to or involuntarily sleeping while sitting up.
- Stress and an inability to exercise normally (exercise intolerance).
- Gastrointestinal signs such as vomiting, gagging, excessive salivation and reflux.
- Sensitivity to heat including being prone to heat stroke, dehydration, rapid heart rate and sudden collapse.
BOAS Surgery: Treatment Options and Recovery
The airway abnormalities caused by this condition can be extremely serious, sometimes even life-threatening and should be corrected with surgery so that your pet can live a healthy, happy life. To reduce progression of disease and to reduce the risk of complications arising from surgery, we advise that surgery be performed as early as clinical signs are detected.
There are multiple surgical options available depending on the specific BOAS characteristics your pet displays. These include:
- Surgery to trim the nostrils and in turn widen them to allow better airflow.
- Surgery to trim the abnormally elongated/thickened soft palate.
- Surgery to trim the laryngeal saccules which block the windpipe.
- Surgery to remove enlarged tonsils.
See the incredible results achieved from a nostril surgery in the following before and after image.
I can’t thank Dr Andres and The Vet Lounge enough for the incredible care they gave our French Bulldog Millie during her BOAS surgery. Before the procedure, she struggled with noisy breathing, constant snoring, and getting tired on even the shortest walks. We were so worried about her long‑term health.
Dr Andres explained everything clearly and made us feel completely at ease. The surgery went beautifully, and the difference has been amazing. Her breathing comfortably, sleeping quietly, and enjoying longer walks than she ever has. It’s like we have a new dog — happy, energetic, and finally able to live life without struggling for air.
If your dog has BOAS or breathing issues, I can’t recommend The Vet Lounge highly enough. Dr Andres and his nursing team are outstanding, and the results speak for themselves.
Is BOAS surgery safe?
While all surgeries carry some risk, BOAS surgery is routinely performed and has a strong success rate when done by an experienced surgeon. At The Vet Lounge, we use modern anaesthesia, advanced monitoring, and gentle handling to keep your dog as safe and comfortable as possible
Will my dog breathe better after surgery?
Most dogs experience a noticeable improvement in breathing, stamina, and overall comfort. Many owners report their dogs can walk longer, sleep more peacefully, and enjoy daily activities without struggling for air.
How long is the recovery period?
Recovery usually takes a few weeks. Your dog will need rest, controlled activity, and careful monitoring during this time. We’ll provide a personalised recovery plan and follow‑up checks to ensure everything is healing well.
Will my dog still snore after BOAS surgery?
Some dogs may still snore lightly, but most experience a significant reduction in noise and effort when breathing. The goal is to improve airflow and reduce airway obstruction
Is BOAS surgery painful?
Your dog will receive modern pain relief before, during, and after surgery. Most dogs recover comfortably with the support of our team and your at home care.
What breeds commonly need BOAS surgery?
Breeds that may benefit include:
- French Bulldogs
- Pugs
- Boston Terriers
- English Bulldogs
- Shih Tzus
- Pekingese
Any brachycephalic (flat‑faced) breed can be affected
How soon will I see improvement?
Many dogs show improvement within days to weeks, especially in breathing comfort and exercise tolerance. Full healing continues over several weeks.
Strong Outcomes. Happier Dogs. Confident Owners.
Whether repairing a cruciate ligament, correcting a breathing issue, or helping a pet return to pain free movement, Dr Andres brings a steady hand, a thoughtful mind and a genuine love for the animals entrusted to his care. If your dog is having trouble breething, snoring or sensitvity to heat, our freindly team is here to help.
Book a BOAS consultation with Dr Andres at our Coomera Clinic today 5502 3333
