What is the heart rate range for sinus tachycardia?

In the context of cardiac rhythms, sinus tachycardia is characterized by a heart rate that exceeds the normal resting range. Typically, the normal resting heart rate for adults is between 60 and 100 beats per minute (bpm). When the heart rate rises above this level due to sinus node activity, it is classified as sinus tachycardia.

The correct heart rate range for sinus tachycardia is generally accepted to be from 100 bpm up to 150 bpm. This range indicates that the heart is responding to factors such as stress, fever, pain, or other conditions that increase the demand for blood flow.

The ranges provided in the other choices do not accurately capture the definition of sinus tachycardia. For instance, a range that includes heart rates below 100 bpm would classify those rhythms as normal or bradycardic, which are distinct from the fast and increased heart rate seen in sinus tachycardia. Therefore, understanding the specific criteria and definitions surrounding sinus tachycardia is essential for recognizing and responding to this condition in clinical practice.