How would you classify a heart rate above 100 beats per minute in adults?

A heart rate above 100 beats per minute in adults is classified as tachycardia. Tachycardia indicates that the heart is beating faster than the normal resting rate, which in adults is typically between 60 to 100 beats per minute. This condition can occur in response to various factors such as exercise, stress, fever, or underlying medical conditions.

Understanding tachycardia is crucial in clinical practice since it can be a sign of an underlying issue that may require further investigation. It differs from bradycardia, where the heart rate is below 60 beats per minute, and from normal sinus rhythm, which denotes a heart rate within the typical range. Atrial flutter is a specific type of arrhythmia characterized by an abnormal heart rhythm, but it does not simply signify a heart rate exceeding 100 beats.