Premature junctional complex: Difference between revisions
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*Differentiate from [[WPW]] (short PR) | *Differentiate from [[WPW]] (short PR) | ||
*May be seen in healthy individuals with no clinical significance | *May be seen in healthy individuals with no clinical significance | ||
*Or in pathology such as valvular disease, drug toxicity, electrolyte | *Or in pathology such as [[valvular emergencies|valvular disease]], [[drug overdose|drug toxicity]], [[electrolyte abnormalities]] | ||
==See Also== | ==See Also== | ||
Revision as of 17:06, 25 September 2019
ECG Findings
- P wave is either:
- Absent
- Abnormal with PR < 120ms
- Retrograde, 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 abnormalities