TGA- Atrial and Arterial Switch-Topic Video

Video Transcription

Video Summary

The speaker explains how to systematically name complex congenital heart defects, using transposition of the great arteries (TGA) as the main example. He emphasizes that cardiac anatomy is named by morphology, not position, and introduces the segmental approach: atrial situs, ventricular looping, and great artery relationship. He reviews how to identify morphologic right and left atria and ventricles using features like trabeculations, valve position, and venous connections. This framework is then applied to distinguish complete TGA (S,D,D), which causes cyanosis and parallel circulations, from congenitally corrected TGA (S,L,L), which has normal physiology despite transposed connections. The talk concludes with a brief overview of surgical repairs for complete TGA, including older atrial switch and modern arterial switch operations, and highlights imaging findings and complications to look for in follow-up, such as baffle problems, right ventricular failure, coronary issues, and pulmonary artery obstruction.

Keywords

congenital heart defects

transposition of the great arteries

segmental approach

atrial situs

arterial switch operation

cardiac morphology