Tetralogy of Fallot is a congenital heart defect that consists of four specific heart abnormalities. These include a ventricular septal defect (a hole between the heart's lower chambers), pulmonary stenosis (narrowing of the outflow tract from the heart), right ventricular hypertrophy (thickening of the heart muscle), and an aorta that is positioned over the ventricular septal defect. This condition affects blood flow and can lead to reduced oxygen levels in the blood. Children with Tetralogy of Fallot may experience symptoms such as cyanosis (a bluish tint to the skin), difficulty breathing, and fatigue during physical activity. Treatment typically involves surgical intervention to repair the heart defects, allowing for improved blood flow and oxygenation. Early diagnosis and management are crucial for better outcomes in affected individuals.