What heart rate is indicative of Junctional Tachycardia?

Junctional Tachycardia is characterized by a heart rate that exceeds 100 beats per minute. This rhythm originates from the junctional area of the heart when there is a focus that either accelerates or is stimulated to fire more rapidly than the normal pacemaker sites. In this condition, the heart rate generally falls within the range of greater than 100 bpm, reflecting the tachycardic nature of the rhythm.

The underlying mechanism often stems from the junctional tissue taking over in the setting of atrioventricular node (AV node) issues, which can occur in various clinical scenarios, including electrolyte imbalances, acute myocardial infraction, or increased automaticity in the junctional area. Recognizing this distinct rate is crucial for appropriate management and treatment strategies in patients presenting with this arrhythmia.

The other rate ranges mentioned, such as less than 40 bpm, 40-60 bpm, and 60-100 bpm, do not meet the criteria for Junctional Tachycardia, as they indicate bradycardia or normal sinus rhythm, which are divergent from the characteristics of this specific tachycardic rhythm.