What is the minimum heart rate for junctional tachycardia?

Junctional tachycardia is characterized by a heart rate that originates from the junctional area of the heart, typically leading to a heart rate of 100 beats per minute or higher. This arrhythmia occurs when the normal conduction pathway is interrupted, and the junctional tissue takes over as the pacemaker.

A heart rate of 100 bpm or higher is what categorizes the tachycardic state, distinguishing it from other forms of junctional rhythm that may display slower rates. In junctional rhythms, if the heart rate is less than 100 bpm, it is referred to as junctional escape rhythm, which falls outside the definition of tachycardia.

Understanding the threshold of 100 bpm is crucial, as clinical management and diagnosis of junctional tachycardia depend on recognizing this defining characteristic. Hence, a minimum heart rate of 100 beats per minute is what solidifies the identification of this condition.