Final answer:
Coarctation of the aorta is often associated with other cardiac abnormalities such as patent ductus arteriosus and tetralogy of Fallot.
Step-by-step explanation:
Coarctation of the aorta is a congenital abnormal narrowing of the aorta. It is often associated with other cardiac abnormalities such as patent ductus arteriosus and tetralogy of Fallot. Patent ductus arteriosus is a condition where the ductus arteriosus, a fetal blood vessel that connects the aorta and pulmonary artery, fails to close after birth. Tetralogy of Fallot is a combination of four heart defects that affect the structure of the heart and cause oxygen-poor blood to flow into the systemic circulation.