General 
Ventricular Septal Defect is the most common type of congenital heart disease in infancy and childhood and accounts for about 25% of all congential heart disease. The classic holosystolic murmur of VSD is loud and easily detected. Commonly, murmurs are detected during the initial clinical investigations the first week after birth. As septal closure is a natural and necessary process to allow for the lungs to function, and most will close within the first year after birth. About 40% of children considered to have VSD at birth, will have spontaneous closure by the age of three. VSD’s are classified as small, medium and large. Small defects may produce no symptoms and the patient may lead a normal life. Medium and large defects will cause insufficient oxygenation of the blood and possibly left heart failure. Surgical repair is then considered.