Which rhythm has a rate of 150 to 350 bpm?

Supraventricular Tachycardia (SVT) is characterized by a rapid heart rate that typically ranges from 150 to 350 beats per minute. This rhythm originates above the ventricles and can often be triggered by various factors, leading to episodes of rapid heart rates that can start and stop suddenly. The rapid rate is a defining feature of SVT, making it distinct from other rhythms.

In contrast, sinus tachycardia is a faster heart rate that originates from the sinus node but is usually not as fast as SVT, typically peaking below 150 bpm. An accelerated junctional rhythm, while also having a faster rate, usually operates within a lower range, typically between 60 and 100 bpm. Ventricular fibrillation, on the other hand, is characterized by chaotic electrical activity in the ventricles, which results in an unmeasurable heart rate and is a life-threatening condition requiring immediate intervention.

The specific rate range associated with supraventricular tachycardia clearly distinguishes it within the context of dysrhythmias, making it the correct answer to the question.