Final answer:
Choana atresia is a congenital condition where the choanae (nasal passageways to the throat) are blocked, often by excessive tissue or bone, which can prevent normal nasal breathing in newborns.
Step-by-step explanation:
Choana atresia is not specifically mentioned in the reference provided. However, it is important to address the student's question. Choana atresia is a congenital condition characterized by the blockage of the choana, which are the passageways that connect the back of the nasal cavity to the throat. It prevents normal breathing through the nose, often requiring immediate medical attention after birth since newborns are obligate nose breathers. The blockage is usually caused by excessive nasal tissue or bone that creates an obstruction. Treatment typically involves surgical procedures to clear the blockage and ensure that the airway is open to allow normal breathing and adequate oxygen intake.
Choana atresia is a medical condition characterized by the blockage or closure of the nasal passages due to the abnormal development of the choanae, which are the posterior openings of the nasal cavities. This condition can be present at birth and can affect one or both of the choanae. It can lead to difficulty in breathing through the nose, recurrent nasal congestion, and a higher risk of respiratory infections.