A member asked:

Thyroid, echo, stress, basic labs, weight, ekg normal, not anxiety.hr@103-111resting for past 10 days.cardio says just hyperactive heart.33yrs history mi-causes?

A doctor has provided 1 answer

Several: Low blood volume, dehydration, increase in adrenaline. These are three. In addition there is always deconditioning or being out of shape.

Answered 11/21/2013

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