This document discusses D-Transposition of great arteries, a congenital heart defect where the positions of the pulmonary artery and the aorta are transposed. It notes that parallel circulation in this condition is not compatible with life and that after over 200 years since its first detection, most newborns with this condition in India are sick at birth.

1. D-Transposition of great arteries
Timeline

3. Parallel circulation is not compatible with life

4. After >200 years of it’s 1st detection
Most of this newborns are sick by
birth in India