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What difference between tachycardia & tachyarrhythmia?

3 doctors weighed in
Dr. Shahin Tavackoli
Internal Medicine - Cardiology
2 doctors agree

In brief: Arrhythmia

Tachycardia is a general term applied to any fast heart rate including tachyarrhythmias.
A tachyarrhythmia specifically implies a form of arrhythmia which causes a fast heart rate, not all arrhythmias cause a fast heart rate. Tachycardia is defined as a heart rate more than 100, normal heart rhythm is frequently more than 100 in exercise, excitement, fevers, etc. None of these are arrhythmias.

In brief: Arrhythmia

Tachycardia is a general term applied to any fast heart rate including tachyarrhythmias.
A tachyarrhythmia specifically implies a form of arrhythmia which causes a fast heart rate, not all arrhythmias cause a fast heart rate. Tachycardia is defined as a heart rate more than 100, normal heart rhythm is frequently more than 100 in exercise, excitement, fevers, etc. None of these are arrhythmias.
Dr. Shahin Tavackoli
Dr. Shahin Tavackoli
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