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A heart rate of 63 is generally normal. Untreated hyperthyroidism usually increased the heart rate so depending on exactly what is going on 63 might be considered unusually low. The answer is probably to check the EKG to make sure the beats are otherwise normal and then just follow it carefully as the hyperthyroidism resolves to see if it stays at 63 or goes lower.

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15y ago

What else can I help you with?