Brachycephalic Obstructive Airway Syndrome (BOAS) in Dogs

High Risk Respiratory Hereditary

Brachycephalic Obstructive Airway Syndrome (BOAS) is a high-severity respiratory condition that can affect dogs of all ages and breeds. BOAS is a complex of anatomical abnormalities in flat-faced breeds including stenotic nares, elongated soft palate, hypoplastic trachea, and everted laryngeal saccules. These combine to severely restrict airflow and cause chronic respiratory distress. It is documented across 6 breeds, though prevalence and severity can differ significantly between them. It typically becomes apparent at Birth onward. Early signs to watch for include noisy laboured breathing, exercise intolerance, gagging and regurgitation, and cyanosis in severe cases. When treatment is required, costs are estimated at £1,500-£4,000 depending on severity, location, and the specific intervention needed. Brachycephalic Obstructive Airway Syndrome (BOAS) has a hereditary component, so health-screening certificates from the breeder are strongly recommended for predisposed breeds. This page covers symptoms, treatment options, and preventive steps — along with breed-specific information where available.

Signs & Symptoms

The following symptoms are commonly associated with Brachycephalic Obstructive Airway Syndrome (BOAS) in dogs. If your dog displays several of these signs, consult your vet promptly — early diagnosis typically leads to better outcomes.

Noisy laboured breathing
Exercise intolerance
Gagging and regurgitation
Cyanosis in severe cases
Sleep apnoea
Overheating

Treatment Overview

Surgical correction of stenotic nares, elongated soft palate, and everted saccules significantly improves quality of life. Weight control and avoiding heat/exercise are essential management measures.

Typical onset: Birth onward

Prevention & Screening

While not all cases of Brachycephalic Obstructive Airway Syndrome (BOAS) can be prevented, the following steps reduce risk or enable earlier intervention:

Select breeding stock with wider nostrils and better airway scores
Use BOAS functional grading schemes before breeding
Avoid breeding from severely affected dogs

Estimated Treatment Cost

Treatment for Brachycephalic Obstructive Airway Syndrome (BOAS) is estimated at £1,500-£4,000, depending on severity, the specific intervention required, and your location. Costs may be higher for surgical procedures or ongoing management. Comprehensive pet insurance covering hereditary conditions is strongly recommended.

Breeds Affected by Brachycephalic Obstructive Airway Syndrome (BOAS)

The following 6 breeds are documented as being susceptible to Brachycephalic Obstructive Airway Syndrome (BOAS). Click any breed to view breed-specific information about this condition, including prevalence and recommended screening.

Looking for more information? Browse all dog health conditions or explore the health guides for in-depth breed care advice.