The heart is split into four parts. Two collecting chambers at the top called Atria and two pumping chambers at the bottom called Ventricles. A Ventricular septal defect (VSD) is a therefore a hole between the bottom two chambers - the Ventricles. There should not normally be a hole in this position as it allows blood to mix between sides which should normally be separated. This is the most common heart defect and in many cases may close itself however there are some which require closure (almost always with surgery) if they are too large or causing problems such as excessive fluid on the lungs or poor weight gain in a baby.
Click here to see the British Heart Foundation leaflet on Ventricular Septal Defect (VSD)or click here to go to the British Heart Foundation website.
Click here to see the Children's Heart Federation leaflet on Ventricular Septal Defect (VSD)or click here to go to the Children's Heart Federation website.