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. 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 3.

Figure 3

Effects of 4-AP on APD90 and ERP in “acutely remodeled” atrial preparations. Shown are superimposed action potentials obtained from atria pre-treated with acetylcholine (ACh, A) and from atria exposed to ischemia and reperfusion + isoproterenol (Isch/Rep/Iso, B) before and after addition of 4-AP. C–D: Summary APD90 and ERP data from pectinate muscle. n=7–12. CL = 500 ms. * − p<0.05 vs. respective control.