HY USMLE Q #1153 – Cardiopulmonary

A 26-year-old woman comes to the physician for a follow-up appointment. Cardiopulmonary examination shows a 2/6 early-systolic murmur and a wide, fixed splitting of S2. Which of the following is most likely to be seen in this patient?

  Left ventricular dilatation
  Increased endothelin-1 activity
  Increased pulmonary capillary wedge pressure
  Interventricular left-to-right shunt
  Interventricular right-to-left shunt