@nilesh123
Question 1. None, it is considered minor surgery and not done it hospital but surgical office. I had both ICD/Pacemaker. The first one (I am on my 3rd) is the most worrisome as you have no idea how will feel ect.
2. Yes, at least in my opinion. I did not have the exercise mode turned on my pacemaker for 15 years. Then one pace tech said turning it on to see if helps you exercise. Was not but a couple fo days had shock. Then another. I went into pace clinc and had them turn it off. The shocks stopped. One tech said it was turned on high which meant would start pacing higher with low effort. I said turn off. I think my heart did not understand the high pacing and tried to shock me out of it.
3. At first was scared to death. Then when I did get shocked and it brought me out of VTAC it was a life saver. Then my cardioloist said to me think of your ICD/Pacemaker like having you own EMS there for you 24/7. That really helped and also that almost all arrymias are corrected by ICD. Now that is VTAC not damage to heart from a heart attack which is a totally different topic than arrymias.
I now think of my ICD as something I can count on if I have electrial issues or VTAC.