You examine a 2-week old male. Oddly, the blood pressure in the right arm is higher than the blood pressures in the legs. You can barely feel a femoral pulse, and when you palpate both the femoral and right brachial pulses, the femoral one is delayed.
Challenge 1: What is your diagnosis?
You examine a female neonate who was delivered 8 hours ago. Her respiratory rate is elevated and she is cyanotic. You put on some pulse oximeters and oddly enough, the oxygen saturation in her right arm is higher than that in her legs.
Challenge 2: How can this be the case?