In this section
The two Great Arteries (Aorta and Pulmonary Artery) have a
single origin from the heart and blood from both ventricles passes
across a VSD into the single arterial trunk. The lung circulation
is exposed to very high pressure and increased blood flow (as with
a large VSD).
Complete repair for Truncus necessitates the insertion of a
'Conduit', which is a tube containing a valve placed to connect the
right ventricle to the pulmonary artery (Illustrated in top right
corner). The VSD is also closed with a patch. Operation needs to be
performed in the first six months of life.