Heart valves are vital for transplantation into children born with valve defects and adults with diseased or worn valves.

The surgeon then removes the patient's diseased aortic valve and a mechanical or tissue valve is put in its place.

To restore normal blood flow, patients with severe aortic valve stenosis need open-heart surgery to replace the diseased valve.

A diseased aortic valve is most commonly replaced using a surgical procedure with either a mechanical or a tissue valve.

He then removed the diseased valve and inserted sutures to hold the prosthetic ball valve.

A homograft may be used to replace a diseased aortic or pulmonic valve.

For decades after, mitral valve replacement was the only surgical option for patients with a severely diseased mitral valve.

A number of reports stressed, however, that replacement of the diseased aortic valve often led to resolution of the coagulopathy.

In 1962 Ross introduced the use of homografts to replace diseased aortic valves.

Mechanical heart valves are widely used to replace diseased valves during open heart surgery.