Premature junctional complex: Difference between revisions
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*Amal Mattu. Mattu ECG Case: Feb 5 2012. Published Apr 9, 2012. UMEmergencyMed. https://www.youtube.com/watch?v=Sb8JozMnxpI. | *Amal Mattu. Mattu ECG Case: Feb 5 2012. Published Apr 9, 2012. UMEmergencyMed. https://www.youtube.com/watch?v=Sb8JozMnxpI. | ||
*Burns E. Premature Junctional Complexes. LifeInTheFastLane. http://lifeinthefastlane.com/ecg-library/pjc/ | *Burns E. Premature Junctional Complexes. LifeInTheFastLane. http://lifeinthefastlane.com/ecg-library/pjc/ | ||
[[Category:Cards]] | |||
Revision as of 21:14, 7 March 2016
EKG Findings
- P wave be either:
- Absent
- Abnormal P wave with short PR < 120ms
- "Retrograde P waves, which may be inverted in inferior leads
- PJC arrives before next sinus beat
- Followed by compensatory pause
- From AV node region and ventricular response usually normal, so QRS complexes narrow
- If conduction abnormal, may have RBBB morphology
Clinical Significance
- Less common than PVCs or PACs
- Differentiate from another more serious cause of short PR (WPW seen in image attached alongside PJCs)
- May be seen in healthy individuals with no clinical significance
- Or in pathology such as valvular disease, drug toxicity, electrolyte disorder
Sources
- Amal Mattu. Mattu ECG Case: Feb 5 2012. Published Apr 9, 2012. UMEmergencyMed. https://www.youtube.com/watch?v=Sb8JozMnxpI.
- Burns E. Premature Junctional Complexes. LifeInTheFastLane. http://lifeinthefastlane.com/ecg-library/pjc/