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.
Ray Liotta knew he was adopted as a young child and did a show-and-tell report on it for kindergarten. Liotta located his biological mother in the 2000s. His parents were of Italian and Scottish ancestry. After research and talks with his biological mother, he learned he was part Scottish. He has one half brother, five half sisters, and a full sister. Liotta was raised Roman Catholic, although his family was not very religious. Liotta said the family went to church and he received first communion and was confirmed, but the family did not pray much. He occasionally uses prayer in his daily