As a result, he was taken off the Metoprolol and asked to stay off work for at least six months. To my mind, the fact that he was taken off the beta blocker suggests that the tachycardia is something new. Tachycardia is not generally part of a previous myocardial infarction 5 years ago. Metoprolol slows the heart not the opposite. I hope you find this information useful.
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