A nurse is providing education to a group of expectant parents about modifiable risk factors for congenital heart diseases. Which factor should the nurse emphasize as one that can be modified during pregnancy?

A) Incorrect. Prostaglandin E1 does not directly increase hemoglobin levels or oxygenation in the blood.

B) Incorrect. Prostaglandin E1 helps maintain the patency of the ductus arteriosus to ensure adequate blood flow to systemic circulation, especially in certain congenital heart diseases. It does not reduce pulmonary blood flow and pressure.

C) The answer is C. Prostaglandin E1 is used to keep the ductus arteriosus open, allowing blood to flow from the pulmonary artery to the aorta. In certain congenital heart diseases, such as critical congenital heart defects, this is necessary to ensure adequate blood circulation.

D) Incorrect. Prostaglandin E1 does not promote the growth of cardiac muscle tissue. Its primary therapeutic effect is related to the patency of the ductus arteriosus.

A) The answer is A. Premedicating with an antipyretic before the dental procedure can help prevent bacterial endocarditis, a severe infection in clients with certain congenital heart diseases.

B) Incorrect. Antibiotic prophylaxis is recommended for some clients with congenital heart diseases to prevent bacterial endocarditis. The client should consult their healthcare provider for appropriate prophylactic measures.

C) Incorrect. The timing of the surgery in the afternoon does not significantly impact recovery. The appropriate timing should be determined by the healthcare provider and the client's medical condition.

D) Incorrect. Aspirin is an anticoagulant, and the client should consult their healthcare provider about the management of aspirin therapy before any surgical procedure.