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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Detalles Bibliográficos
Autores principales: Barold, S. Serge, Mond, Harry G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2023
Materias:
Spotlights
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10692837/
https://www.ncbi.nlm.nih.gov/pubmed/38045458
http://dx.doi.org/10.1002/joa3.12940
Descripción
Sumario: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.[Image: see text]

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