Author Question: Surgical closure of the ductus arteriosus would: a. Stop the loss of unoxygenated blood to the ... (Read 29 times)

jc611 · **on:** Jun 28, 2018

Surgical closure of the ductus arteriosus would:

a. Stop the loss of unoxygenated blood to the systemic circulation.
b. Decrease the edema in legs and feet.
c. Increase the oxygenation of blood.
d. Prevent the return of oxygenated blood to the lungs.

Question 2

The nurse is admitting a child with rheumatic fever. Which therapeutic management should the nurse expect to implement?

a. Administering penicillin
b. Avoiding salicylates (aspirin)
c. Imposing strict bed rest for 4 to 6 weeks
d. Administering corticosteroids if chorea develops

trampas · **Reply #1 on:** Jun 28, 2018

Answer to Question 1

ANS: D
The ductus arteriosus allows blood to flow from the higher-pressure aorta to the lower-pressure pulmonary artery, causing a right-to-left shunt. If this is surgically closed, no additional oxygenated blood (from the aorta) will return to the lungs through the pulmonary artery. The aorta carries oxygenated blood to the systemic circulation. Because of the higher pressure in the aorta, blood is shunted into the pulmonary artery and the pulmonary circulation. Edema in the legs and feet is usually a sign of heart failure. This repair would not directly affect the edema. Increasing the oxygenation of blood would not interfere with the return of oxygenated blood to the lungs.

Answer to Question 2

ANS: A
The goal of medical management is the eradication of the hemolytic streptococci. Penicillin is the drug of choice. Salicylates can be used to control the inflammatory process, especially in the joints, and reduce the fever and discomfort. Bed rest is recommended for the acute febrile stage, but it does not need to be strict. The chorea is transient and will resolve without treatment.