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. 2007 Feb 13;454(2):209–222. doi: 10.1007/s00424-007-0217-3

Fig. 1.

Fig. 1

After-depolarizations and arrhythmic activity in spontaneously contracting hypokalemic hearts. Epicardial monophasic action potential recordings in the absence of extrinsic stimulation in hearts exposed to normokalemic (5.2 mM K+, a) and hypokalemic (3.0 mM K+, b) test solutions and normokalemic (c) and hypokalemic (d) test solutions containing lidocaine (10 μM) for 20 min