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Hi I take Bisoprolol as I am suffering from congenital heart failure. I am told I will need open heart surgery to correct a faulty valve (dont know terminology) but my weight was a major problem. I was told I needed to lose a significant amount before surgery could be considered. I have lost 8 and half stone now. I have been using a heart rate monitor for all of my walking/swimming exercise, as I was told a calculation of Kcals burned by heart rate was the most accurate way to work out how many calories I have burned during exercise. I was then told as I am taking a beta-blocker the calculations are inaccurate as my heart is being kept at a slower BPM. Is there a figure by which you can say that beta blocker slows the heart by x amount? Could I then recalculate to compensate or am I better off throwing the HRM in the bin?
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