This figure shows progressive increase in rightward delay, best seen in
Lead V1, as the pacing voltage is lowered from 1.5 V. The fall in Lead 1
voltage (last complex) marks the transition from NS-HBP to S-HBP where
abrupt development of complete RBBB is seen. This slide shows decreasing
effect of parallel wavefront which resolves RBBB as the voltage is
lowered.
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