Difference between DDI and VVI modes?
Hi everyone. I haven't posted in a long time. I am now 1.5 years post unplanned PM for failed SVT ablation. Two months after getting my pacemaker, my EP changed my setting from DDD to DDI. I was uncomfortable and changed back after 5 days. At my November check-up, he told me that my battery was going quickly because my ventricle was being paced at 99%. After wearing a halter moniter for a week now, my EP changed my setting yesterday again to determine what my heart can do on its own. (We think I have first degree heart block with intermittent second degree) I am still wearing halter moniter. PM is now set to kick in at 40 bpm. However, now he told me that he set PM to VVI. Can anyone tell me the difference between DDI and VVI modes?