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. 2020 Nov 2;76(5):492–505. doi: 10.1097/FJC.0000000000000892

FIGURE 2.

FIGURE 2.

The principal factors underlying the atrial-selective effects of INa blockers are (1) a more positive RMP, (2) a more gradual phase 3 of the action potential in atrial versus ventricular cells resulting in a shorter DI in the atrium, and (3) a more negative steady-state inactivation relationship of the sodium channel. Right panel reproduced from Burashnikov et al,2 with permission.