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 ...

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 ...

When parts of the heart, such as the valves, do not work properly, it is possible to repair or replace them. The aortic and mitral valves are the ones that surgeons most commonly replace. Most valve ...

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 ...

Open heart surgery for aortic or mitral valve repair or replacement has traditionally required opening the patient’s chest through their sternum (breast bone). In many cases today, a minimally ...

PLYMOUTH MEETING, Pa. (WPVI) -- The TAVR procedure has revolutionized a challenging task in heart care: fixing stiff valves. And it has made the process much easier for patients, getting them back to ...