BOAS

Brachycephalic Obstructive Airway Syndrome (BOAS) is a serious, sometimes life-threatening condition affecting dogs. It encompasses a range of anatomical abnormalities in the upper airways, resulting in breathing difficulties and subsequent exercise and heat intolerance. It is a progressive disorder, which means it gets worse over time. 

The primary method of treatment is surgery.

Information Handouts

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Patient Cases

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What Is BOAS?

Brachycephalic Obstructive Airway Syndrome (BOAS) is a condition affecting flat-faced breeds, where anatomical abnormalities in the upper airway can lead to breathing difficulties, exercise intolerance, and heat sensitivity.

Common anatomical abnormalities include:

  • Stenotic nares (narrow nostrils)
  • Elongated soft palate
  • Everted laryngeal saccules
  • Macroglossia (enlarged tongue)
  • Hypoplastic trachea (narrow windpipe) 
  • Abnormal nasal turbinates (in select cases)

Treatment

Surgical intervention is the gold standard for treating BOAS. 
At North Richmond Vet Hospital, we offer:

  • Rhinoplasty. This removes a wedge of tissue from each nostril to widen the airway
  • Palatoplasty. This involving trimming and suturing the elongated soft palate so it no longer obstructs the airway
  • Laryngeal Sacculoectomy. This involves removing the everted laryngeal saccules that block airflow at the voice box
  • Tonsillectomy. This is performed only if everted tonsils are contributing to airway narrowing
  • Tracheostomy. This is a last-resort procedure used in emergencies or end-stage cases to bypass the upper airway.


What About Laser Turbinate Surgery?

Laser-assisted turbinectomy (LATE) targets abnormal internal nasal structures. While this may benefit select dogs, it requires:

  • A CT scanner and surgical laser
  • Extended hospitalisation (up to a week)
  •  Highly specialised personnel


We do not offer this procedure at North Richmond. However, a study (Seneviratne et al., 2020) showed that 70% of dogs improved with traditional surgeries alone. Laser surgery is best considered in dogs that continue to struggle after initial surgical correction.

Diagnosis

BOAS is typically diagnosed through a combination of physical examination and anaesthesia-assisted internal evaluation.


  • External features like narrow nostrils can be seen during consultation.
  • Internal abnormalities, including elongated soft palates or everted saccules, require examination under general anaesthesia.
  •  We also offer CT scanning and endoscopy at North Richmond Vet for owners who wish to fully assess the airways.


To minimise anaesthetic risk, we perform diagnosis and corrective surgery during the same procedure whenever possible.

Symptoms

Breathing difficulties should never be considered "normal for the breed."


Common clinical signs include:

  • Snorting or snoring (even when awake)
  • Wheezing or noisy breathing
  • Excessive panting or effort to breathe
  • Heat and exercise intolerance
  • Gagging, regurgitation, or vomiting
  • Collapse or distress during activity

Our BOAS Expert

Dr Michelle has been treating brachycephalic dogs for over 20 years now. She has developed extensive experience and understanding in the specific conditions these special dogs have as well as the best treatment options. 


If you have a bracycephalic dog that is showing breathing or other related problems, make an appointment to speak with Dr Michelle and she can discuss the treatment options available.

Let's Help Your Animal Breathe Easier

If your animal is showing signs of BOAS, don’t wait. Early surgical intervention can improve comfort, prevent complications, and even save their life.

📞 Call (02) 4571 2042 or email info@northrichmondvet.com.au to book a consultation today.

Other Services

General Health & Preventative Medicine

We focus on proactive, preventative care, e.g.  tailored vaccination schedules, internal and external parasite control, routine health checks, dental care, and nutritional advice - in order to keep your pet healthy

Soft Tissue Surgery

We perform a wide range of soft tissue surgeries for cats, dogs, rabbits, rats, guinea pigs, and ferrets etc.

These procedures include lump removals, wound repairs, desexing, bladder stone removal, and gastrointestinal surgery.

Orthopaedics

Our team is experienced in performing orthopaedic surgery in small animals, such as cruciate ligament repairs, fracture fixation, and joint stabilisation etc. We aim to restore comfort and function so your pet can move with ease again.

Bradycephalic Obstructive Airway Syndrome (BOAS)

We diagnose and treat BOAS in both dogs and cats, particularly in flat-faced breeds like Pugs, French Bulldogs, and Persians.

Our surgical treatments aim to improve breathing by a combination of surgical techniques

Internal Medicine Services

Our team excels in diagnosing and managing complicated medical conditions that affect oragns like kidneys, liver, the gastrointestinal tract, endocrine system etc.  

Blood tests, imaging (x-ray or ultrasound), CT, endoscopy and flurscopy are available. 

Imaging Services

Our hospital is equipped with digital X-ray, ultrasound, CT scanning, and fluoroscopy, allowing us to examine internal structures in detail. These tools help us diagnose a wide range of conditions, from fractures and organ issues to gastrointestinal and respiratory disorders

Ophthalmology

We provide  ophthalmology services, including diagnosis and treatment of conditions e.g. cataracts, glaucoma, corneal ulcers, dry eye, and eyelid abnormalities.

Reproduction

We provide specialised reproductive services for dogs, including semen analysis, artificial insemination (AI), pregnancy diagnosis, and elective or emergency caesareans.

Reptiles 
(Snakes, Lizards & Turtles)

With experience in reptile husbandry and medicine, our team can diagnose and treat a wide range of conditions, from nutritional and metabolic disorders to respiratory infections and injuries.

We also provide routine health checks, parasite control, and surgical services.

Small Mammals 
(Rabbits, Guinea Pigs, Rats & Ferrets)

Small mammals like rabbits, guinea pigs, ferrets, and rats have unique health needs.

We offer tailored veterinary care including health checks, dental treatment, desexing, and surgery - delivered with the expertise and compassion these special pets deserve.

Birds

We offer care for pet birds, from budgies to parrots to chickens, including health checks, beak and nail trims, diagnostics, and treatment of common illnesses.

Our team understands the unique anatomy and needs of avian species.

Pain Management

Managing chronic pain e.g. osteoarthritis, IVDD, chronic ear infections, degenerative joint disease, and old injuries etc. is key to maintaining your pet’s comfort and quality of life.

Our goal is to reduce discomfort and keep your pet active and happy at every stage of life

Behavioral Medicine

From anxiety to aggression, behavioural issues can impact your pet’s wellbeing and your bond with them. We provide behavioural medicine services to help identify the root cause and create tailored treatment plans

Large Animals

While we currently offer limited services for large animals, we are actively working on expanding our capabilities in this area. Our goal is to provide comprehensive care for small ruminants and other livestock in the near future.

Stay tuned as we grow our services to better support the needs of our wider animal community.

Emergency & After Hour Services

For our existing clients, we offer emergency after hour consultations and surgeries if needed.