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Walk the evidence base by book and chapter — the raw source passages that ground Ask, Differential, and the rest.

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contentuptodate· Content· item f27_28_28103

©2013 UpToDate ® Print Email Assessment of LV synchrony Regional volume time curves (left) obtained in a patient with LV asynchrony without (left) and with (right) biventricular pacing. Note the changes in asynchrony index with pacing. Courtesy of Victor Mor-Avi, PhD and Roberto M Lang, MD.