Key result
Retrograde conduction delays and block of premature ventricular responses occurred primarily within the ventricular specialized conduction system rather than the A-V node in isolated rabbit hearts.
Population
Isolated preparation of rabbit atria and ventricles
Design
Preclinical
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Challenges A-V node primacy for retrograde block; leaves open translation to human electrophysiology.
This preclinical study demonstrates that retrograde conduction delays and block often occur within the ventricular specialized conduction system rather than solely in the A-V node.
A 1967 study studied Retrograde concealment of multiple premature ventricular responses. Premature ventricular stimulation was evaluated on Retrograde conduction delays and block. Retrograde conduction delays and block of premature ventricular responses occurred primarily within the ventricular specialized conduction system rather than the A-V node in isolated rabbit hearts.
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