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 guest appearance on the "SpongeBob SquarePants" episode "What Ever Happened to SpongeBob?"; in the episode, he voices the leader of a gang called the Bubble Poppin’ Boys, who try to kill an amnesiac SpongeBob (voiced by Tom Kenny) because bubble blowing is illegal in New Kelp City, but they get blown away by him, and SpongeBob becomes the new mayor of the city; the episode also had Liotta work with another legendary actor, Clancy Brown, who voices Mr. Krabs on the show, although their characters don’t share any screen credit. He also appeared in "Crossing Over", co-starring Harrison Ford. Liotta