DE,
I'll keep you in my prayers.   We are all mortal and only HE has the final say about how long our lives on earth are gonna be..  It is sometimes a little scary having large problems like you have and I did last year and still , like yourself, have to be evaluated and tested because most men last between 5 - 10 years that have my heart disease.
I have looked for your condition but not found any longevity outcome data  on it.   
I'll let y'all know if the test result is not good.  I have few secrets.   And truth is I have NONE as God knows all my secrets and my thoughts.  SO they aren't really secret. Just not known my our species....  lol!!!!!