PR prolongation with alternating wide and narrow QRS complexes: What is the mechanism?
JOURNAL OF ARRHYTHMIA(2024)
Abstract
The alternating wide and narrow QRS complexes following prolonged PR interval is a challenging issue. The scalar diagrams with the graphic representation of the electrical events and the careful analysis of their temporal relationship can help to better understand the surface electrocardiogram.
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Key words
AV block,Dual nodal pathway,ECG,PR prolongation,Ventricular ectopic beat
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