A 36-day-old female infant developed respiratory distress and fussiness. She had been a term infant with a negative New York State newborn screen. Physical examination: Heart rate: 260 beats/minute Temperature: 32.4 o C Prolonged capillary refill Faint distal pulses She was given adenosine twice a day for supraventricular tachycardia, intubated for worsening respiratory distress, and placed on continuous positive airway pressure via nasal prongs and in FiO 2 of 1.0. Echocardiogram showed decreased biventricular systolic function along with left to right shunting via patent foramen ovale.
Radiograph of the infant and inferior vena cava oxygen saturation (uncorrected for temperature) has been provided. What is your diagnosis? *This case is from the Editorial team of Docplexus and is meant for educative purposes only. The answer is posted in the comment section below!
