Artificial heart valve was later changed to use silicone-coated material. The first implantation of mechanical heart valve to human was performed by Dr. Hufnagel on 11 September 1952, using the valve that he developed. This event accelerated the development of other artificial heart valves. 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.
Jeanne Liotta to discover what their world is made of and what they think about it - to observe and take notes and reflect upon - that's our jobs as human beings somehow, that's what I feel like I'm doing when I make things. It's just my thinking." The artist's films have been shown at several film exhibitions, including: In 2008 Liotta won the Tiger Award at the Rotterdam Film Festival for her film "Observando el cielo". Liotta's works can be found in a number of public institutions, including: Jeanne Liotta Jeanne Liotta (born 1960) is an American visual artist who is