The biological scaffolds of heart valves with cellular materials removed can be freeze-dried and stored for transplanting later as tissue-engineered replacement valves, Leibniz University and Hannover Medical School researchers claimed.
New York -
Barbara Walters, 80, one of America's most popular television journalists, announced this morning on ABC's The View that she will undergo heart surgery later this week to replace a heart valve.
A six-year-old boy from Central England has become the first person in the world to have an operation to widen a heart valve that was guided by MRI scanning rather than by X-rays.
