Jan
10
2014

Why doesn’t coarctation of aorta affect the 1st and 2nd intercostal arteries?

Coarctation of the aorta is a narrowing of the aorta, so if the narrowing is below the 1st or 2nd intercostal artery then likely those arteries would not be affected. Also there is a good collateral circulation along the spinal cord which helps to protect the circulation.