The heart valves play a vital role in ensuring blood flows correctly through the heart and the rest of the body. If they do not function correctly, a person may require surgery to replace the damaged ...

In replacement aortic valve procedures, bioprosthetic valves have become increasingly more common than mechanical replacements, since those made out of animal tissue are less likely to cause blood ...

Pig heart valves used to replace defective aortic valves in human patients failed much earlier and more often than expected, says a report from cardiac surgeons at Washington University School of ...