A nurse is assisting in the care of an infant diagnosed with tetralogy of Fallot. The mother asks the nurse to explain the condition. Which of the following statements should the nurse include in the explanation?

This condition results in increased blood flow to the lungs

This condition includes four heart defects that cause oxygen-poor blood to circulate

This condition is a narrowing of the aortic valve that decreases blood flow to the body

This condition is a single defect that allows complete mixing of the blood in the heart