I'm sorry about your heart attack, I was young too, not as young as you 41.
My heart is so damaged 2 parts are just dead tissue, so my ICD is both. Mine paces constantly, thats why my batteries go so fast. This is the only time my defibrillator has ever fired. And it hurt, just like they are using the paddles on you, but it doesn't last that long. Usually they will last about 10 years but I am a strange case as my Docs say.
And it is under my skin, it does make me feel secure that it is there. The Drs. at the ER said it was a catastrophic heart event, which was fatal for anyone, but since I have my box as I call it, the problem was taken care of.
I was not alone, my 13 yr old granddaughter had just got home from school and I had her call 911. But if I had been alone I would have been able to do it myself.
So talk to your Dr. if you are a canidate I would definitely see about getting one, it is usually just a day surgery and you are a little sore.
Good luck, I'm praying for you.
Terri