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It is a defect that occurs at the time of birth where the vessels of the heart arise from inappropriate ventricles hindering the oxygen supply to the blood.
Truncus arteriosus is a birth defect in which there is only one main artery in the heart that conveys blood both to the lungs and to the rest of the body.
Aortic dissection refers to a serious condition where there is a tear in the wall of a major artery leading to blood flow within the layers of the aorta.