Hi
Welcome to the MedHelp forum!
An implantable cardiac debrillator helps improve the heart function when ejection fraction is less than 35%. With your EF less than 10%, this is a life saving situation for you. However the prognosis, duration of life etc depends on several factors beyond the scope of net diagnosis and estimation. Please consult your doctor about this. Hope this helps. Take care!
The best person to answer your question is your docter, as everyone is different. You will have ask him/her a direct question and be ready to hear the truth.
I know this doesn't help much, but it's your best line of defense,,,,to know the answer and take positive steps twards a better outcome.
Good luck, my friend.