Question

What congenital heart defects can cause tachypnea in an infant at 3-7 days?

1) Atrial septal defect
2) Ventricular septal defect
3) Patent ductus arteriosus
4) Coarctation of the aorta

Answer 1

Patent ductus arteriosus (PDA) is a congenital heart defect that can cause tachypnea in infants at 3-7 days.

Step-by-step explanation:

Tachypnea in an infant at 3-7 days can be caused by a congenital heart defect called patent ductus arteriosus (PDA). PDA is a condition where the ductus arteriosus, a blood vessel that connects the pulmonary artery to the aorta in the fetus, fails to close after birth. This results in increased blood flow to the lungs and can cause symptoms like rapid or shallow breathing (tachypnea).