Brachycephalic obstructive airway syndrome (BOAS)*

Brachycephalic obstructive airway syndrome

Brachycephalic obstructive airway syndrome (BOAS) is caused by a mismatch between a shortened skull and the soft tissues that have not accompanied this shortening, causing the airway to be crowded and consequently partially obstructed. Breeds commonly affected by this condition include French Bulldogs, English Bulldogs, Pugs, Boston Terriers. The mean age of presentation is usually between 2 and 4 years old, although younger animals are commonly affected. The aim of surgery is to decrease airflow resistance by alleviating upper airway obstruction and is still the mainstay of long-term treatment. Prognosis is in general good, with 90% of dogs improving after surgery and a reported mortality rate of only around 4%. Most treated dogs, although improved symptomatically, must never be considered normal dogs and there is an increasing role for the veterinary profession in educating the public about this condition.