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Figure 4 Apicobasal Alternans
Apicobasal differences in endocardial and epicardial repolarization alternans during atrial pacing at cycle length 500 ms. The proportion of recording sites with alternans is compared between apical, mid, and basal segments. Alternans is measured separately for each third of the JT interval denoted as early JT, mid JT, and late JT. *p < 0.05 (apex vs. mid vs. base).
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