**Core Concept**
Tetralogy of Fallot (TOF) is a congenital heart defect characterized by four anatomical abnormalities: ventricular septal defect, pulmonary stenosis, right ventricular hypertrophy, and an overriding aorta. The primary goal of treatment is to improve oxygenation of the blood and alleviate symptoms.

**Why the Correct Answer is Right**
The correct treatment for TOF is surgical correction, typically performed using the Blalock-Taussig shunt or the modified Blalock-Taussig shunt. This procedure involves creating a systemic-to-pulmonary artery shunt to increase blood flow to the lungs, thereby improving oxygenation. The shunt is usually placed between the subclavian artery and the pulmonary artery. This allows for increased blood flow to the lungs, eventually leading to decreased cyanosis and improved overall health.

**Why Each Wrong Option is Incorrect**
**Option A:** Medications such as prostaglandin E1 can be used to maintain patency of the ductus arteriosus, but they are not a definitive treatment for TOF.
**Option B:** Cardiac catheterization is a diagnostic tool, not a treatment for TOF.
**Option C:** Pacemakers are used to treat rhythm disturbances, not congenital heart defects like TOF.

**Clinical Pearl / High-Yield Fact**
TOF is often associated with a "boot-shaped" heart on chest X-ray due to right ventricular hypertrophy.

**Correct Answer:** A. Surgical correction using the Blalock-Taussig shunt is the definitive treatment for Tetralogy of Fallot.