Question

What is Patent Ductus Arteriosus?

a.

A hole from a septum secundum or septum primum defect in the interatrial septum produces a modest left-to-right shunt.

b.

The aorta arises from the right ventricle and the pulmonic trunk from the left ventricle. A VSD, or ASD with PDA, is needed for extrauterine survival. There is right-to-left shunting.

c.

There is a hole within the membranous or muscular portions of the intraventricular septum that produces a left-to-right shunt, more severe with larger defects.

d.

The ductus arteriosus, which normally closes soon after birth, remains open, and a left-to-right shunt develops.

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Answer: (d).The ductus arteriosus, which normally closes soon after birth, remains open, and a left-to-right shunt develops. Explanation:Patent Ductus Arteriosus is defined as "The ductus arteriosus, which normally closes soon after birth, remains open, and a left-to-right shunt develops."

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