Fast Heart Rate - Symptoms, Causes and Treatments • MyHeart

Jul 28, 2017 · A fast heart rate is known as tachycardia and commonly defined as a heart rate greater than 100 beats per minute. Although a fast heart rate is commonly defined as a heart rate greater than 100 beats per minute, there is no specific cut off for what defines a significantly fast heart rate or a number above which a fast heart rate becomes an issue.4.7/5(376)…