Brachycephalic Obstructive Airway Syndrome Flashcards
1
Q
What are the 3 congenital components of BOAS?
A
- elongated soft palate - extends into laryngeal opening
- stenotic nares
- hypoplastic trachea - English Bulldogs!
2
Q
What are 4 acquired components of BOAS? What causes their development?
A
- everted laryngeal saccules
- laryngeal edema
- laryngeal collapse
- redundant, edematous pharyngeal folds
increased airway resistance
3
Q
What breeds are predisposed to developing BOAS?
A
- Bulldogs
- Boston Terriers
- Pugs
- Pekingese
- Boxers
- Shar-Pei
- Lhasa Apso
4
Q
What is the main clinical sign associated with BOAS? What are some others?
A
open mouth, stertorous breathing
- exercise intolerance
- respiratory distress
- gagging and dysphagia
- collapse, cyanosis
- aspiration pneumonia
5
Q
How is BOAS diagnosed?
A
- thoracic radiographs –> evaluation for hypoplastic trachea
- oral exam under anesthesia
6
Q
How is BOAS treated? What is unable to be addressed?
A
- resection of elongated soft palate
- wedge resection of nasal fold
- permanent tracheostomy for laryngeal collapse in advanced stages (ensure it is not just edema)
- removal of everted laryngeal saccules
hypoplastic trachea - underlying heart disease can cause problems
7
Q
What complications are associated with resection of an elongated soft palate?
A
- OVER-resection = aspiration pneumonia
- POST-OP swelling or UNDER-resection = airway obstruction
