A 16-year-old female asked:
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what could cause a fast heartbeat even when the body is relaxed?

1 doctor answer
Dr. Mathew Chengot
43 years experience Cardiology
Variable: The causes can vary. hyper or hypothyroidism -over active thyroid is a possible cause others are atrial fib, tachycardia , Some patients can get resting tachycardia for no reason . Please have check up for the same ekg and blood tests for evaluation is good start
Answered on Jul 1, 2015
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