Professional
Technical
In the Industry Vocabulary Test
Choanal Atresia
Pronunciation: ko-AN-al uh-TREE-zhuh
Congenital blockage of the nasal passages at the back of the nose affecting newborn breathing.
Full Definition
Choanal atresia is a birth defect where one or both nasal passages are blocked by abnormal bony or soft tissue. Since newborns are obligate nasal breathers, bilateral choanal atresia is a neonatal emergency requiring immediate airway management. Unilateral cases may present later with chronic nasal congestion and feeding difficulties. Treatment involves surgical opening of the blocked choanae, often performed endoscopically.
Usage
Usage note: Bilateral cases are surgical emergencies; unilateral cases may be managed electively.
In Context
- "Bilateral choanal atresia was suspected when the newborn developed severe respiratory distress that improved with crying." — Emergency department note
- "Endoscopic repair of unilateral choanal atresia was performed using a transnasal approach." — Operative report
Also known as
Posterior Nasal Atresia
Don't confuse with
Nasal Stenosis
Deviated Septum