Question

a newborn becomes cyanotic when quiet or feeding but pink when crying. what is the likely cause?
o a. choanal atresia
o b. pneumonia
o c. tracheomalacia
o d. asthma

Explanation:

Choanal atresia is a condition where there is a blockage in the nasal passages. New - borns are obligate nose - breathers. When quiet or feeding, they rely on nasal breathing, and with choanal atresia, this leads to cyanosis. When crying, they open their mouths and can get enough oxygen, turning pink. Pneumonia typically presents with other symptoms like fever, cough, and respiratory distress not specifically related to the crying - quiet dichotomy. Tracheomalacia is a floppiness of the trachea and usually causes noisy breathing rather than this specific pattern. Asthma is less common in newborns and has different characteristic symptoms.

Answer:

a. Choanal atresia