In a ductal dependent congenital heart defect, what is the purpose of administering Prostaglandin E1?

In a ductal dependent congenital heart defect, what is the purpose of administering Prostaglandin E1?

• A. To close the ductus arteriosus
• B. To maintain the ductus arteriosus open
• C. To reduce systemic vascular resistance
• D. To treat infection

Answer: (B)

In ductal-dependent congenital heart defects, blood flow to vital parts of the body or lungs relies on the ductus arteriosus remaining open after birth. Prostaglandin E1 (alprostadil) is used to keep that ductus arteriosus patent by relaxing the smooth muscle of the ductus, ensuring a continuing conduit for blood until surgical repair or stabilization can take place. Without keeping it open, either the systemic or pulmonary circulation can collapse, leading to life-threatening hypoxemia or shock. So the purpose is to maintain ductus arteriosus patency. Note that this medication isn’t about closing the ductus or treating infection; it may cause vasodilation and apnea as side effects, requiring careful monitoring.

In ductal-dependent congenital heart defects, blood flow to vital parts of the body or lungs relies on the ductus arteriosus remaining open after birth. Prostaglandin E1 (alprostadil) is used to keep that ductus arteriosus patent by relaxing the smooth muscle of the ductus, ensuring a continuing conduit for blood until surgical repair or stabilization can take place. Without keeping it open, either the systemic or pulmonary circulation can collapse, leading to life-threatening hypoxemia or shock. So the purpose is to maintain ductus arteriosus patency. Note that this medication isn’t about closing the ductus or treating infection; it may cause vasodilation and apnea as side effects, requiring careful monitoring.