Medical glossary
Tachycardia
A heart rate over 100 beats per minute at rest.
Definition
Tachycardia is a resting heart rate above 100 bpm. Common non-pathological causes include exercise, caffeine, fever, and anxiety. Persistent unexplained tachycardia warrants an ECG and work-up for anaemia, thyroid, or arrhythmia.
See also
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Glossary entries are general reference, not medical advice for any specific person.