Extreme shortness of breath
I have had a pacemaker for since 2015. It served me well for several years. In the last 2 years, I have had increased shortness of breath. This summer I was to the point of hardly functioning with super fatigue and weakened muscles and dizzyness and lack of balance. I also have mild muscular dystrophy. (I was not officially diagnosed until I was 67). I thought the muscular dystrophy was developing quickly and severely. I went in for a scheduled check of my pacemaker and had a different nurse than in the past. My oxygen reading was 95 just before the appointment and that was way down from my normal 99 or 100. I complained as always about my extreme shortness of breath and he told me that a-fib should not cause that. At the end of the session, he said that he turned it down to 60 from 65 since the higher rate was not helping. Then he said that he turned off the sensor which speeds up the heart with exertion because I might not need it. That seemed counterintuative to me but now I feel like my old self with energy, optimism, muscles and good balance. In all my previous research I didn't find anything about this solution. Has anyone else out there had a similar experience?