Tetralogy of Fallot is a complex, severe congenital heart disease consisting of four cardiovascular malformations such as ventricular septal defect, pulmonary stenosis, aortic righting (the aorta rides over the defective ventricular septum) and right ventricular hypertrophy. Tetralogy of Fallot is a combined congenital cardiovascular anomaly, the symptoms of which are mainly progressive cyanosis and dyspnea appearing since childhood, most often after crying or exertion, relieved by crouching and resting, and severe hypoxia causing syncope and convulsions, often accompanied by pestle and mortar fingers. Ventricular septal defect and pulmonary stenosis are the basis for the pathophysiologic changes that cause tetralogy of Fallot, and an echocardiogram is essentially diagnostic of the disease. The only treatment option available for tetralogy of Fallot is surgical correction of the deformity, which should be treated as early as possible. The current introduction of a combination of interventional and surgical procedures for the treatment of tetralogy of Fallot has greatly improved the patient’s chances of salvage. If you are suffering from Tetralogy of Fallot, you should seek prompt medical attention and treatment under the guidance of a specialized doctor.