Great Vessels Transpositions refer to a medical condition that involves abnormal positioning of the main arteries in the heart. There are a few synonymous terms used to describe this condition, such as arterial transposition, transposition of the great arteries, or arterial malposition. These terms all denote a similar anomaly in which the two main arteries, the aorta and pulmonary artery, are switched, causing oxygen-rich blood to flow back to the lungs instead of being circulated to the body. This congenital defect requires surgical intervention to correct and ensure proper blood flow. Synonyms for Great Vessels Transpositions are crucial in medical discussions to ensure accurate communication among healthcare professionals.