I recommend speaking with your doctor in regards to difficult questions such as life expectancy. There are many variables that must be taken into consideration to get an estimate of survival and life expectancy. Generally speaking, based solely on the diagnosis of heart failure the Framingham study found that from 1990-1999 the mortality after heart failure diagnosis was 11% at 30 days, 28% at 1 year, and 59% at 5 years.