05-31-2006, 04:17 PM
A 5-month-old boy is brought for a follow-up examination. He was born at 37 weeks' gestation and has had persistent wheezing since shortly after birth despite treatment with nebulized and oral bronchodilators and oral corticosteroids. His diet consists of 32 ounces of iron-fortified cow's milk-based formula daily. He appears well nourished and happy. On examination, there is moderate relief of wheezing with extension of the neck. Which of the following is the most likely mechanism of this infant's wheezing?
O A) Allergic reaction to cow's milk
O B) Aspiration of a foreign body
O C) Compression of the airway by a vascular ring
O D) Concurrent upper respiratory tract infection
O E) Persistent immaturity of lungs
O A) Allergic reaction to cow's milk
O B) Aspiration of a foreign body
O C) Compression of the airway by a vascular ring
O D) Concurrent upper respiratory tract infection
O E) Persistent immaturity of lungs