What is radical surgery for tetralogy of Fallot

summary

Sometimes, many patients will have congenital heart malformations, which will have a great impact on their normal life, and for a long time will damage other related organs. Now let's talk about the radical operation of tetralogy of Fallot.

What is radical surgery for tetralogy of Fallot

First, tetralogy of Fallot (TOF) is a common congenital heart malformation. The basic pathologies were ventricular septal defect, pulmonary artery stenosis, aortic straddling and right ventricular hypertrophy. Tetralogy of Fallot is the most common type of cyanotic cardiac malformation in children. The prognosis of children with tetralogy of Fallot mainly depends on the degree of pulmonary artery stenosis and collateral circulation. In severe cases, 25% - 35% died within 1 year old, 50% died within 3 years old, 70% - 75% died within 10 years old, and 90% died prematurely.

Second: mainly due to chronic hypoxia, polycythemia, leading to secondary cardiac hypertrophy and heart failure and death. For tetralogy of Fallot, supine position, general anesthesia and median chest incision, moderate hypothermic cardiopulmonary bypass is generally recommended, while deep hypothermic circulatory arrest and low flow cardiopulmonary bypass are recommended for newborns. Generally, 4 ℃ cold blood cardioplegia is used to induce cardiac arrest by coronary artery perfusion for myocardial protection. Intracardiac correction included repair of ventricular septal defect and removal of right ventricular outflow tract obstruction.

Third, patients with poor pulmonary vascular development, small left ventricular development, and infant coronary artery malformation that affect the application of right ventricular outflow tract patch should be palliative surgery first, and then secondary correction surgery. For older children, subclavian artery pulmonary artery anastomosis or right ventricular outflow tract patch widening are often used. The latter is suitable for patients with narrow bilateral pulmonary arteries. Infants within 3 months were treated with ascending aorta pulmonary artery anastomosis or central shunt.

matters needing attention

This kind of radical operation is mainly aimed at those patients with congenital heart malformation. To sum up, it is to correct the heart tissue and cells through chest surgery. In this way, some damaged parts can be repaired and the obstructed blood vessels can be dredged.