Premature junctional complex: Difference between revisions
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== | ==ECG Findings== | ||
*P wave be either: | *P wave be either: | ||
**Absent | **Absent | ||
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[[File:WPW and PJC.JPG|thumbnail|WPW with PJC underlined in red]] | [[File:WPW and PJC.JPG|thumbnail|WPW with PJC underlined in red]] | ||
== | ==Refences== | ||
<references/> | |||
[[Category:Cardiology]] | [[Category:Cardiology]] | ||
Revision as of 15:05, 18 May 2016
ECG 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 (short PR)
- May be seen in healthy individuals with no clinical significance
- Or in pathology such as valvular disease, drug toxicity, electrolyte disorder
