Artificial heart valve Artificial heart valve An artificial heart valve is a device implanted in the heart of a patient with valvular heart disease. When one of the four heart valves malfunctions, the medical choice may be to replace the natural valve with an artificial valve. This requires open-heart surgery. Valves are integral to the normal physiological functioning of the human heart. Natural heart valves are evolved to forms that perform the functional requirement of inducing unidirectional blood flow through the valve structure from one chamber of the heart to another. Natural heart valves become dysfunctional for a variety of pathological causes. Some
Jay Alan Liotta Jay Alan Liotta Jay Alan Liotta is a senior official in the Department of Defense, in its Office of Detainee Policy. Liotta earned a Bachelor's degree form Wittenberg University in 1982, in Political Science and East Asian Studies. During the summer of 1981 he spent a term in China. Liotta entered the US Government service in 1983. Liotta completed a Masters at George Washington University's School of Public and International Affairs. Liotta studied Mandarin at University, and much of his Government service has been served in Asia, or working on Asian related issues. Liotta led the first American delegation to