Silver Book Fact
Life expectancy and quality of life gains from AVR
A study of 4,617 patients who underwent aortic valve replacement (AVR) over a period of 20 years found significant gains in life expectancy and quality of life — 43,166 net life-years gained at a net value of $11.2 billion (~$14.2 billion in 2017 dollars).
Wu Y, Grunkmeier G, Starr A. The Value of Aortic Valve Replacement in Elderly Patients: An economic analysis. J Thorac Cardiovasc Surg. 2007; 133(3): 603-7. http://www.jtcvsonline.org/article/S0022-5223(06)01477-2/fulltext