S. Serge Barold, Harry G. Mond
Abstract
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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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.
Key concepts: Medicine, Cardiology, Bigeminy, Internal medicine, Right bundle branch block, Confusion, QRS complex, Bundle branch block