Skip to main content
. Author manuscript; available in PMC: 2009 Sep 1.
Published in final edited form as: Heart Rhythm. 2008 Aug 6;5(9):1304–1309. doi: 10.1016/j.hrthm.2008.05.020

Figure 1.

Figure 1

Inhibition of IKur using low concentrations of 4-aminopyridne (4-AP) abbreviates APD90 and ERP in “healthy” atrial preparations. Shown are superimposed action potentials recorded from the crista terminalis (CT) under control conditions (C) and after the addition of 4-AP (A). Graphs plot summary data of APD90 (B) and ERP (C) recorded from CT and pectinate muscle (PM) sites as a function of 4-AP concentration. CL = 500 ms. n=7–12. * − p<0.05 vs. respective control. Note that atrial ERP corresponds to the level of APD75.