Population
Dogs anesthetized with pentobarbital, with the heart denervated, adrenals ligated, and the S.A. node crushed
Design
Preclinical
Authors
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Ventricular echoes with prolonged V-A delay in animals; leaves open distinct A-V/V-A pathways in human reentry, needing clinical studies.
This preclinical study suggests that ventricular 'echoes' (re-entrant discharges) occur when V-A delay lengthens, proposing that A-V and V-A propagation follow different anatomical or functional pathways.
A. Rosenblueth (1958) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: