MRCP UK EXAMINATIONS

Detailed explanation-1: -d-TGA: A more common variation in which the aorta is positioned to the right and front of the pulmonary artery, arising from the right ventricle rather than the left. l-TGA: A less common variation in which the aorta is positioned to the left and front of the pulmonary artery.

Detailed explanation-2: -In babies with d-TGA, oxygen-poor blood from the body enters the right side of the heart. But, instead of going to the lungs, the blood is pumped directly back out to the rest of the body through the aorta.

Detailed explanation-3: -D-TGA is incompatible with life unless mixing of the circulations occurs through an atrial and/or ventricular septal opening, or a patent ductus. Severe cyanosis occurs within hours of birth, followed rapidly by metabolic acidosis; there are no murmurs unless other anomalies are present.

Detailed explanation-4: -In transposition of the great arteries, the main arteries leading away from the heart-the aorta and the pulmonary artery-are switched, also called transposed. Transposition of the great arteries (TGA) is a serious, rare heart problem in which the two main arteries leaving the heart are reversed.