What is TGA?
Your child’s TGA may have been diagnosed on a scan during pregnancy. If so, he or she would have been taken into hospital shortly before birth to see if the prenatal assessment of the defect was accurate, and if the heart needs treatment in the shorter term. Your child may have been diagnosed after birth. Your baby might have been quite well before the foetal circulation system started to close down. This is because red blood was passing between the left and right atrium, from where it was pumped into aorta and around the body. Some of the blue blood in the aorta passed through the ductus arteriosus into the pulmonary artery and was carried to the lungs. As the foetal circulation started to close down, your baby may have become increasingly blue (cyanosed), and so breathless that he or she was very difficult to feed. If your child has a VSD this will allow red blood to flow from the left ventricle into the aorta, and the symptoms will not be so severe. When a heart problem is suspected