As in the case of transposition, in this situation the origin of the "great vessels" (the aorta and pulmonary arteries) is abnormal. In this case, both arise from a common "trunk". Blood from both ventricles mixes together as it all exits through the single valve exiting from the heart.
The treatment of Truncus involves sewing a flexible tube with its own valve from the right ventricle to bring blood to the pulmonary arteries.
ęCOPY;1997 HeartPoint Updated November 1997
For more about Congenital Disease,
also see these related subjects on HeartPoint:
| Congenital Heart Disease | Atrial Septal Defect | Coarctation of the Aorta | Ebstein's Anomaly | Patent Ductus | Tetralogy of Fallot |
| Transposition of the Great Vessels | Truncus Arteriosus | Ventricular Septal Defect |
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