VENTRICULAR SEPTAL DEFECT
Ventricular septal defect is a hole in the wall that separates the right and left ventricles of the heart.
Ventricular septal defect is one of the most common congenital (present from birth) heart defects.
It occurs in nearly half of all children with congenital heart disease.
It may occur by itself or with other congenital diseases.
Before a baby is born, the right and left ventricles of the heart are not separate. As the fetus grows, a septal wall forms to separate these 2 ventricles. If the wall does not completely form, a hole remains. This hole is known as a ventricular septal defect, or a VSD. The hole can occur in different locations along the septal wall. There can be a single hole or multiple holes.
Ventricular septal defect is a common congenital heart defect. The baby may have no symptoms and the hole can close over time as the wall continues to grow after birth. If the hole is large, too much blood will be pumped to the lungs. This can lead to heart failure. If the hole is small, it may not be detected for years and only discovered in adulthood.
The cause of VSD is not yet known. This defect often occurs along with other congenital heart defects.
In adults, VSDs can be rare, but serious, complication of heart attacks. These holes do not result from a birth defect.