Junctional Rhythm - Junctional Dysrhythmias.
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- Rhythms are often named according to the origin of the electrical activity in the heart or the structure where the problem is occurring.
- Junctional Rhythm aka Junctional “Escape” Rhythm is aptly named due to the electrical impulses causing the atrial activity are originating in the AV Junction.
- The rate for this rhythm is the same as the AV Junction, 40 – 60 bpm.
- The change in the locus of stimulation affects the morphology (inverted) and potential location of the P waves (before, during or after the QRS complex).
- If the P wave occurs before the QRS, the PR interval will likely measure shorter than normal (0.12 second).
- If the P wave is buried or occurs after the QRS, it cannot be measured.
Analyze this tracing using the five steps of rhythm analysis.
- Rhythm: Regular
- Rate: 43
- P wave: inverted
- PR interval: 0.08 sec
- QRS: 0.08 sec
- Interpretation: Junctional Escape Rhythm
Authors and ReviewersAuthored by Thomas O'Brien
Medically reviewed by Dr. Jonathan Keroes, MD, Cardiology
Last Update: 11/8/2020