Question: A 3 week old premature infant male is evaluated for cyanotic spells and found to have aortic coarctation. He undergoes a sternotomy for repair and is kept intubated for 3 days. After extubation, he is noted to have a weak cry and difficulties with feeding. What is the most likely diagnosis? [Answer will be posted with next week's new question]

Answer to last week's question, "The Way The Wind Blows" (January 30, 2017)

Turbulent airflow through the perforation.