L.'s ventricular septal defect is large, the size of a dime.

Large ventricular septal defects can cause life-threatening complications during infancy.

The exact cause of ventricular septal defects is not fully understood.

There is also usually a hole between the left and right ventricles of the heart (ventricular septal defect).

Most ventricular septal defects are small and do not cause a problem.

Large ventricular septal defects usually cause heart problems and symptoms by the time a baby is 3 to 6 months old.

Treatment is not needed in cases where a ventricular septal defect is small or closes on its own.

This is closely followed by ventricular septal defect that affects approximately 35% of patients.

I'm slated to operate on a young woman with a ventricular septal defect.

The ventricular septal defect is closed with a patch.