請問人工心臟瓣膜一語的英文是什麼？

人工心臟瓣膜-Artificial heart valve
英文解釋-a device which is implanted in the heart of patients who suffer from valvular diseases in their heart. When one or two of the four heart valves of the heart have a malfunction, the choice is normally to replace the natural valve by an artificial valve. This requires open-heart Surgery.

Valves are integral to the normal physiological functioning of the human heart. Natural heart valves are structures which have evolved a form which meets their functional requirements, which is to induce largely unidirectional flow through themselves. Natural heart valves may become dysfunctional due to a variety of pathological causes. Certain heart valve pathologies may necessitate the complete surgical replacement of the natural heart valves with heart valve prostheses.

. If a surgeon cannot repair a heart valve, the valve is removed and replaced with【 an artificial (prosthetic) valve】 by sewing it into the remaining tissue from the natural valve.()

2007-03-24 01:12:23 補充：
http://www.sjm.com/procedures/procedure.aspx?name=Heart+Valve+Replacement
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