During heart valve replacement surgery, a surgeon replaces damaged or diseased valves in the heart. They can replace it with a mechanical valve or biological valve from a pig or cow. A person with ...

A heart valve that is severely damaged may need replacing. A surgeon may replace the damaged valve via an incision in the groin. The heart contains four valves, which allow blood to move in and out of ...

Valvular heart disease is a form of heart disease that occurs when one or more of the heart’s four valves don’t function properly. Valve replacement surgery may be an option if the valves of your ...

Your mitral valve is one of the four major valves in your heart. It helps blood flow through your heart and out to the rest of your body. When this valve isn’t working correctly, it puts stress on ...

In hydronic heating, to control where heated water goes to various sections of a building, the system might rely on two or more zone valves. A zone valve opens or closes based on demand from a ...

The use of transcatheter aortic-valve replacement has been shown to reduce mortality among high-risk patients with aortic stenosis who are not candidates for surgical replacement. However, the two ...

Valvular aortic stenosis is a progressive disease in which the end stage is characterized by obstruction of left ventricular outflow, resulting in inadequate cardiac output, decreased exercise ...