A member asked:

What causes inappropriate sinus tachycardia in an athlete? high level athlete and it makes me really tired. is this bad?

A doctor has provided 1 answer

Sinus tachycardia: Inappropriate sinus tachycardia refers to increased resting heart rate and may be due to fever, hyperthyroidism, anxiety, caffeine,alcohol, nicotine, certain stimulant medications, severe anemia. A normal resting heart rate ranges from 55-90. Your physician can document your heart rate and rhythm by a resting EKG and an outpatient holter monitor tracing. Other tests will also be ordered.

Answered 11/21/2017

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