Intermittent heart block
Hi! I got a pacemaker for exercise induced 2;1 high grade 2nd degree block. I use to mainly pace if my heart rate went over 100bpm. If I was under 100bpm, I wouldn't pace much. Mostly my own heart working. About a year ago, I started having heart block 2;1 outside of exercise. It would start at a heart rate of 80 then 70 then 60 Now all day. So now I pace 100%. Went from pacing 40% to 100% since implant. Which was almost 2.5 years ago. Is this normal for block to go from intermittent to persistent? I'm now have CHB when they check my underlying rhythm at PM checks. I'm just shocked it progressed this fast. I know they don't get better but worse. I just didn't expect it this fast. Anyone else go from barely pacing to 100%? Did the pacemaker make my heart weaker pacing? Does pacing make it weaker relying on it so much? Any insight would be appreciated.