Key result
Experimental LBBB does not alter initial QRS configuration or duration in the right epicardial lead.
Population
6 dogs with experimentally produced left bundle-branch block, and 30 clinical cases of left ventricular…
Design
Preclinical
Authors
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Hypothesis-generating for partial normal LV activation in LBBB; leaves open translation to human conduction patterns.
A considerable portion of the left ventricle is activated normally in some cases of left bundle-branch block, offering a new concept of septal and left ventricular activation.
Takashi Wada (1959) studied Left bundle-branch block and left ventricular hypertrophy (n=36). Experimentally produced left bundle-branch block vs. Baseline (before production of left bundle-branch block) was evaluated on Configuration and duration of the initial phase of the QRS complex in the right epicardial lead. Experimentally produced left bundle-branch block did not change the configuration or duration of the initial phase of the QRS complex in the right epicardial lead.
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