Review Question - QID 212727

A 1-day-old boy is brought to the emergency room by his parents for difficulty breathing. He was delivered at home via vaginal birth with no complications. The mom received minimal prenatal care as she wanted the most natural process for her child. The mom reports that he has been relatively healthy expect for when he feeds he gets a little fussy. However, these episodes self-resolve after he curls up his legs. A physical examination demonstrates a baby in acute distress with subcostal retractions and cyanosis at the distal extremities. A 5/6 systolic ejection murmur is heard at the left upper sternal border. What is the best next step in terms of managing this patient?