Which rate range defines accelerated junctional rhythm?

Which rate range defines accelerated junctional rhythm?

• A. 100+ bpm
• B. 60-100 bpm
• C. 40-60 bpm
• D. 80-110 bpm

Answer: (B)

Accelerated junctional rhythm occurs when the AV junction takes over pacing and fires faster than a normal junctional rhythm but not fast enough to be classified as tachycardia. The pacing rate from the AV junction in this state is typically 60–100 beats per minute. This range sits between the slower 40–60 bpm of a standard junctional rhythm and the faster >100 bpm seen in junctional tachycardia. So recognizing 60–100 bpm as the rate defining accelerated junctional rhythm helps distinguish it from both slower junctional rhythms and from tachycardia. On the ECG, P waves may be absent or inverted and occur after the QRS, reflecting retrograde atrial activation from AV junction pacing.

Accelerated junctional rhythm occurs when the AV junction takes over pacing and fires faster than a normal junctional rhythm but not fast enough to be classified as tachycardia. The pacing rate from the AV junction in this state is typically 60–100 beats per minute. This range sits between the slower 40–60 bpm of a standard junctional rhythm and the faster >100 bpm seen in junctional tachycardia. So recognizing 60–100 bpm as the rate defining accelerated junctional rhythm helps distinguish it from both slower junctional rhythms and from tachycardia. On the ECG, P waves may be absent or inverted and occur after the QRS, reflecting retrograde atrial activation from AV junction pacing.