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. 2016 Jan 21;4(3):313–324. doi: 10.3892/br.2016.577

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Copyright: © Tse et al.

This is an open access article distributed under the terms of the Creative Commons Attribution License.

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Figure 6. — (A) Epicardial and (B) endocardial ventricular effective refractory periods (VERPs) obtained during programmed electrical stimulation. Significant differences from *normokalaemic and ^†hypokalaemic values, respectively. Epicardial and endocardial VERPs were significantly reduced by hypokalaemia (analysis of variance, **P<0.01 and ***P<0.001 for epicardium and endocardium, respectively), but restored to normokalaemic values by 0.1 mM heptanol (P>0.05). These were further increased by 2 mM heptanol (*P<0.05). (^††P<0.01, ^†††P<0.001).