I just had a bout of Afib that lasted 24 hrs.  I went to the ED and was put on metoprolol and had a follow up ekg to establish that my heart was back in sinus yesterday morning.  Last night and still this morning I have a very mild pain or tightness in my left chest.  It is mostly noteable if I take a deep breath and reminds me of the kind of muscle pain I might get in other muscles a day after a work out.  Would 24hrs of Afib cause this kind of a delayed ache?  I also walked and rode my bike yesterday following the "all clear" on the ekg.  I would not normally even pay attention to this amount discomfort but following the Afib, I guess I wonder if I should back off the excercise regime.
HelloWelcome to Chat Doctor. Your Aphid episode is controlled with the metoprolol which slows down the heart rate and inhibits extra beats from the atrium from being conducted to the ventricles. The muscle pain which you are having is not related to Fib in any way. But it can be related to associated underlying heart disease. Also, the cause of the Aphid must be established. I suggest you undergo a 2d echo test which will show whether the atria from which the Aphid arises are dilated. It can also show presence of clots in the atrium which can form post Aphid. Additional information like pumping function of the heart, functioning of the valves can also be derived by a 2 D echo. Exercise increases the heart rate and hence it may precipitate a recent Aphid. You can do non-strenuous exercises like brisk walking and cycling at slow speeds. But strenuous exercises should be avoided at this point of time. After a month you can gradually step up the duration of your exercise and also increase the workout. The body gets accustomed to any slow process but if it is subject to sudden conditions of fast heart rate, the Aphid may precipitate. So please continue with non strenuous exercises and increase gradually. Wishing you good health. Regards