Cardiology Multiple Choice Questions from Cardiophile MD – Kindle Edition. Please click here for a Free Look Inside
In dextro transposition of great arteries (D-TGA), there is:
Correct answer: 1. Atrioventricular concordance and ventriculoarterial discordance
In D-TGA, atria and ventricles are in the normal position, but aorta and pulmonary artery arise from opposite ventricles. So there is atrioventricular concordance and ventriculoarterial discordance.
Dual discordance occurs in C-TGA (corrected transposition of great arteries), also known as L-TGA. Here dual discordance in connection between the atria and ventricles cause systemic venous return to reach the pulmonary arteries and pulmonary venous return to reach the aorta.
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