Which statement best describes patent ductus arteriosus?
A) Patent ductus arteriosus involves a defect that results in a right-to-left shunting of blood in the heart.
B) Patent ductus arteriosus involves a defect in which the fetal shunt between the aorta and the pulmonary artery fails to close.
C) Patent ductus arteriosus is a stenotic lesion that must be surgically corrected at birth.
D) Patent ductus arteriosus causes an abnormal opening between the four chambers of the heart.

Question

Quizplus · Accepted Answer

Patent ductus arteriosus is failure of the fetal shunt between the aorta and the pulmonary artery to close.Patent ductus arteriosus allows blood to flow from the high-pressure aorta to the low-pressure pulmonary artery,resulting in a left-to-right shunt.Patent ductus arteriosus is not a stenotic lesion.Patent ductus arteriosus can be closed both medically and surgically.Atrioventricular defect occurs when fetal development of the endocardial cushions is disturbed,resulting in abnormalities in the atrial and ventricular septa and the atrioventricular valves.

Which Statement Best Describes Patent Ductus Arteriosus