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
Shawn Liotta Gattuso. Liotta has served as a coach at the Professional, Collegiate, and High School level including serving as a head or assistant coach at every level of high school football in the State of Pennsylvania. Liotta was hired as the head coach of the Pittsburgh RiverRats in 2007. In 2008, the franchise moved to Erie, Pennsylvania, and Liotta remained with the franchise. In 2009, Liotta left Erie to join the Wheeling Wildcats. Liotta returned to Erie in 2010. In 2011, Liotta coached quarterback, Adam DiMichele to an MVP season in the Southern Indoor Football League, as well as a Northeast