So did they get any closer to figuring out what's really going on in the heart? Was the surgery just to replace the pacemaker? If so, it doesn't go deep, it's not considered major surgery. Though of course I have no idea how deep it would have been put years ago.
I believe one of the other advantages of the newer technology is that it can be adjusted from the doctor's computer. So if it needs to be faster, slower, stronger, etc it's a computer button rather than surgery. Don't know if they did that years ago.
