What is the heart rate range for sinus tachycardia?

Sinus tachycardia is characterized by an elevated heart rate due to various physiological or pathological conditions, typically resulting in a heart rate above 100 beats per minute. It is important to note that the condition arises from the sinoatrial (SA) node firing more rapidly than usual, which is a normal response to stimuli such as exercise, stress, or fever.

Thus, when defining sinus tachycardia, the critical factor is that the heart rate exceeds 100 beats per minute. This differentiation is essential for understanding how sinus tachycardia manifests compared to other types of tachyarrhythmias, as it remains aligned with the normal sinus rhythm but at an accelerated pace. Understanding this distinction helps in diagnosing and managing the condition effectively.