What is a tachyarrhythmia?

At rest, your heart normally beats between 60 and 80 times a minute. Exercise, mental or emotional stress, and some illnesses can cause your heart rate to accelerate. A heart rate over 100 beats per minute is called tachycardia. A tachycardia can be a normal adaptation to certain conditions (for example exercise) or, can occur inappropriately, and is then called a tachyarrhythmia.

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