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

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Dr. Donald Colantino
Internal Medicine

In brief: 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.

In brief: 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.
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