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  • Title: Parasystole simulating ventricular bigeminy with Wenckebach-type coupling prolongation.
    Author: Lightfoot PR.
    Journal: J Electrocardiol; 1978 Oct; 11(4):385-90. PubMed ID: 81870.
    Abstract:
    A 65-year old male originally presented with repetitive ventricular bigeminal sequences demonstrating progressive prolongation of successive coupling intervals suggesting Wenckeback-type exit block. An even number distribution of conducted beats always intervened between bigeminal sequences. Subsequent analysis proved this to be a fortuitous "pseudo-Wenckebach" phenomenon, with the actual mechanism being continuous parasystole. Additional recording verified a parasystolic rhythm.
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