Which rhythm has a rate range of 60-100 bpm?

• A. Normal Sinus Rhythm
• B. Atrial Fibrillation
• C. Junctional Tachycardia
• D. Accelerated Junctional Rhythm

Answer: (D)

Accelerated junctional rhythm is defined by a heart rate in the 60–100 bpm range, meaning the pacing origin has shifted from the SA node to the AV junction. In this rhythm, the QRS complex remains narrow, but the P waves may be absent, inverted, or occur after the QRS, reflecting a junctional origin. This rate range distinguishes it from junctional tachycardia (which is faster than 100 bpm) and from normal sinus rhythm (where pacing comes from the SA node and P waves precede each QRS with a normal PR interval). So, when you see a rate in the 60–100 bpm range paired with P waves that aren’t normal before the QRS, accelerated junctional rhythm is the correct interpretation.