Key result
Incomplete bundle-branch block may be either segmental or diffuse, with delayed excitation occurring in specific portions or the entire homolateral ventricle, respectively.
Population
Dogs exhibiting various degrees of right and left bundle-branch block
Design
Preclinical
Authors
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Hypothesis-generating for conduction delay mechanisms; leaves open human translation and clinical relevance.
This preclinical study elucidates the mechanisms of ventricular excitation delay in complete and incomplete bundle-branch block, highlighting the roles of free wall, septal factors, and segmental versus diffuse conduction delays.
Smith et al. (1954) studied Right and left bundle-branch block. Controlled studies of ventricular excitation was evaluated on Mechanism of ventricular excitation and intraventricular conduction time. Incomplete bundle-branch block may be either segmental or diffuse, with delayed excitation occurring in specific portions or the entire homolateral ventricle, respectively.
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