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  • Title: Two accessory pathways, dual AV nodal conduction, and 1:2 ventriculoatrial conduction in a patient with multiple supraventricular tachycardias.
    Author: Rosenfeld LE, Batsford WP.
    Journal: Pacing Clin Electrophysiol; 1990 Feb; 13(2):171-8. PubMed ID: 1689833.
    Abstract:
    Multiple supraventricular tachycardias were induced in a patient with two left posterior accessory pathways and dual atrioventricular nodal conduction. One of the accessory pathways conducts slowly and exhibits decremental conduction. A "double retrograde response" (2:1 ventriculoatrial conduction) due to simultaneous retrograde propagation of a single ventricular depolarization over two longitudinally dissociated pathways plays a role not only in tachycardia initiation, but in the maintenance of a unique, irregular tachycardia.
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