Hi, I'm new here as well as new with AFib. I'm still confused by this issue and still have so much to learn. I'm currently on Pradaxa and CardizemCd. For the most part I think it's doing it's job, my heart rate averages 69-72. My issue is lately I have been experiencing dizziness and lightheadedness, where I feel like I could pass out. Usually happens after sitting for long periods. I'm not sure if it has anything to do with my Afib or getting up too fast. I do know that I'm terrified to do anything anymore and become a hermit in my own home in fear of something happening to me. Has any one else experienced this? Any advise?