View source for Premature junctional complex

==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, with ventricular response usually normal, so QRS complexes usually narrow
*If conduction abnormal, may have RBBB morphology

==Clinical Significance==
*Less common than PVCs or PACs
*Differentiate from [[WPW]]
*May be seen in healthy individuals with no clinical significance
*Or in pathology such as valvular disease, drug toxicity, electrolyte disorder
[[File:WPW and PJC.JPG|thumbnail|WPW with PJC underlined in red]]

==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/

[[Category:Cards]]