How long is the life span for someone that has heart failure?

In March of 2007 I had a massive heart attack, I woke with a balloon pumping my heat for two days. As a result of the severe damage to my heart my ejection fraction was 15%. A follow up visit to my Dr I was given a second stint and after my consultation with my Dr I asked squarely how long did I have to live. He said if every thing was equal I could expect to live perhaps 4 more years. However within 6 months I could barely walk and my EF was about 12%. Fortunately I received a transplant and now my EF is around 60%. Please understand the biggest risk for such low EF is the shutting down of other organs especially the kidneys. Please get with your Dr and discuss your options. Low ejection fraction is nothing to ignore.

taylor26101@Yahoo.com