What is aortic stenosis in children? Aortic stenosis means that your child has a heart valve that is too narrow or is blocked. The aortic valve is 1 of 4 heart valves that keep blood flowing through ...

It’s an artery, which means it carries oxygen-rich blood away from the heart to supply the body. The aorta starts at the heart’s left ventricle, curves into the aortic arch, and stretches all the way ...

This study aimed to confirm the prognostic value of a novel angiographic microvascular resistance (AMR) index in patients undergoing transcatheter aortic valve replacement. The angiographic ...