Mine has never fired. I got it in June 2011. I am almost ready for a new battery. I need extensive back surgery and with this device I can’t go in an MRI machine. I will see my electrical doctor on the 5th and talk about a new device. The news ones are MRI compatible. I really need my back surgery . It is so bad I keep losing feeling in my legs and luckily have been near a chair when it happens. Also it is affecting my bowels . I was supposed to have it December 22 , but had a heart attack and 2 stents. They said I had to wait 7 months. In the mean time my husband stole my spot and had major reconstructed foot and ankle surgery. He was in the hospital a week , rehab center 4 weeks and wheel chair non weight bearing 8 weeks.
Taking care of him and pushing his wheel chair made me worse . He is a 100 lbs more than me. Hopefully I am looking at March for surgery on back. Also praying electrical heart doctor will change out device before surgery.

I have never had that happen.

No, nothing re Defibrillator. However, my implant is a CRT-D with a lead to left ventricle. I do feel that lead pulsing at times which is weird.

Me either but so far just a stent