Which singular congenital defect involves failure of closure of the connection between the pulmonary artery and aorta?
A) atrial septal defect
B) ventriculo septal defect
C) patent ductus arteriosus
D) tetralogy of Fallot

Question

Quizplus · Accepted Answer

Patent ductus arteriosus (PDA) involves the failure of the ductus arteriosus to close after birth, which is the connection between the pulmonary artery and aorta. Atrial septal defect (ASD) involves a hole in the wall between the two upper chambers of the heart, ventricular septal defect (VSD) involves a hole in the wall between the two lower chambers of the heart, and tetralogy of Fallot involves a combination of four congenital heart defects.

Which Singular Congenital Defect Involves Failure of Closure of the Connection