<unk><unk>  is a rare type of heart disease that occurs at birth (congenital heart disease), in which a single blood vessel<unk><unk>  comes out of the right and left ventricles, instead of the normal two vessels (pulmonary artery and aorta).
There are different types of<unk><unk> .
Persistent truncus arteriosus
Interrupted aortic arch
Total anomalous pulmonary venous connection
Partial anomalous pulmonary venous connection
Tricuspid atresia
Pentalogy of Fallot
Transposition of the great vessels
Patent ductus arteriosus 