Varicose vein
Any vein that is abnormally dilated (widened).
Cardiac
Valve
A structure in a blood vessel or the heart which ensures blood flows only one way. They are constructed of single or multiple flaps which swing open to allow blood to flow forwards and swing shut to prevent back flow. The valve flaps are referred to as ‘leaflets’ or ‘cusps’.
Truncus Arteriosus
A condition in which the aorta and main pulmonary artery are joined where they leave the heart. Blood from both ventricles passes across a VSD into this single arterial trunk.