PANCE Practice Test

Category - PA

Which one of the following is the most common congenital heart defect to cause an initial left-to-right shunt?
  1. Tetralogy of Fallot
  2. Coarctation of the aorta
  3. Ventricular septal defect
  4. Atrial septal defect
Explanation
Answer: C - Congenital heart defects may or may not involve shunting of blood between the systemic and pulmonary circulations. The most common of such defects is the ventricular septal defect which causes left-to-right shunt.
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