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
Ray Liotta In 1998, he received critical praise for his performance in "Phoenix" playing a compulsive gambler. In addition to his film roles, Liotta portrayed singer Frank Sinatra in the 1998 TV movie "The Rat Pack" (for which he received a Screen Actors Guild award nomination), provided the voice of Tommy Vercetti for the 2002 video game "Grand Theft Auto: Vice City", and appeared in the television drama "ER" in 2004, playing Charlie Metcalf in the episode "Time of Death". The "ER" role earned Liotta an Emmy for Outstanding Guest Actor in a Drama Series (Liotta later spoofed himself and his Emmy