Transscatheter aortic valve replacement is a novel way to replace ... It is a trileaflet valve made from bovine pericardium in a stainless steel frame that is designed to be expanded by a balloon.

While narrowing of either the aortic or mitral valve typically requires valve replacement (with a manufactured “mechanical” valve, or with a tissue valve which typically comes from a cow or pig), ...

DAVID MONTGOMERY: Aortic stenosis is a tightening of one of the four major valves of the heart. The aortic valve is particularly important because the aortic valve is the gateway to the rest of ...