Which of the following statements about Tetralogy of Fallot is accurate?

Tetralogy of Fallot is a congenital heart defect that is known for four key anatomical abnormalities: ventricular septal defect, right ventricular outflow tract obstruction (pulmonary valve stenosis), right ventricular hypertrophy, and an overriding aorta. Among these, pulmonary valve stenosis is one of the defining features and is a significant component of the condition.

Understanding the characteristics of Tetralogy of Fallot is crucial, as pulmonary valve stenosis causes obstruction to blood flow from the right ventricle to the lungs, leading to decreased oxygenation of blood and resulting in cyanosis. This obstruction can vary in severity, influencing the clinical presentation and management of the condition.

The other statements do not accurately describe the primary features of Tetralogy of Fallot. For instance, while right ventricular hypertrophy does occur due to the increased workload from the outflow obstruction, it is not classified as a primary defect of the condition but rather a consequence of it. Aortic stenosis is not a typical part of Tetralogy of Fallot; instead, a rightward displacement of the aorta occurs. Lastly, while some patients may have a patent foramen ovale, it's not a defining characteristic of Tetralogy of Fallot. The presence of