A nurse is assisting in the care of an infant diagnosed with tetralogy of Fallot. The infant's caregiver asks the nurse to explain this diagnosis. Which of the following is an accurate statement about this condition?

A. "Tetralogy of Fallot is a group of four heart defects that impact circulation of blood in your child's body. These are pulmonary stenosis, ventricular septal defect, right ventricular hypertrophy, and an overriding aorta." This is the correct definition of Tetralogy of Fallot. The four defects result in decreased oxygenation of blood, leading to cyanosis and other circulatory problems that require medical intervention. B. "Tetralogy of Fallot is a heart defect that impacts circulation in your child's body due to the atypical placement of the aorta." While an overriding aorta is one of the four defects in Tetralogy of Fallot, it is not the sole cause of circulatory problems. The condition results from a combination of four structural abnormalities, not just aortic malposition. C. "Tetralogy of Fallot is a group of heart defects that impact the circulation of blood in your child's body. These are aortic stenosis, atrial septal defect, and left ventricular hypertrophy." This statement describes different congenital heart defects but does not accurately define Tetralogy of Fallot. Aortic stenosis and atrial septal defects are not components of this condition. D. "Tetralogy of Fallot is a heart defect that impacts circulation in your child's body due to an opening in the wall between the ventricles, causing mixing of oxygenated and deoxygenated blood." While a ventricular septal defect (VSD) is one of the four components, it is not the only issue affecting circulation. The combination of all four defects contributes to the condition's severity.