Tetralogy of Fallot is a congenital heart defect that includes abnormalities such as ventricular septal defects, pulmonary valve stenosis, and stenosis of the right ventricular outflow tract. Due to these congenital defects, the ejection of blood from the heart is affected, which in turn impacts the blood supply to various systems and organs throughout the body. The patient may exhibit symptoms of cyanosis and hypoxia, especially after physical activity, hence the use of supplemental oxygen is advisable. While oxygen therapy can temporarily alleviate these hypoxic symptoms, it does not address the underlying issue. Surgery is necessary for a definitive resolution.