Pseudo‐2:1 bundle branch block. “Fusion causes confusion”

Pseudo‐2:1 bundle branch block. “Fusion causes confusion”

The fusion of narrow‐QRS sinus‐generated beats with end‐diastolic ventricular extrasystoles occurring in bigeminy can produce an electrocardiographic pattern difficult to differentiate from parasystole. Such an ECG should not be interpreted as 2:1 RBBB because of the variability of the PR intervals....

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Veröffentlicht in:Journal of arrhythmia 2023-12, Vol.39 (6), p.977-978
Hauptverfasser: Barold, S. Serge, Mond, Harry G.
Format: Artikel
Sprache:eng
Schlagworte:
bundle branch block
Conflicts of interest
Electrocardiogram
Electrocardiography
end‐diastolic ventricular extrasystole
parasystole
Sinuses
Spotlight
Spotlights
ventricular fusion
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Zusammenfassung:The fusion of narrow‐QRS sinus‐generated beats with end‐diastolic ventricular extrasystoles occurring in bigeminy can produce an electrocardiographic pattern difficult to differentiate from parasystole. Such an ECG should not be interpreted as 2:1 RBBB because of the variability of the PR intervals.
ISSN:1880-4276
1883-2148
DOI:10.1002/joa3.12940