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. Author manuscript; available in PMC: 2010 Jul 1.
Published in final edited form as: J Cardiovasc Electrophysiol. 2009 Feb 27;20(7):803–810. doi: 10.1111/j.1540-8167.2009.01449.x

Figure 3.

Figure 3

Comparison of the effects of chronic amiodarone on maximum rate of rise of action potential upstroke (Vmax) and conduction time between pulmonary vein (PV) (left, n = 6) and left ventricular (LV) wedge (right, n = 4) preparations. A: Action potentials (APs) recorded simultaneously from 2 sites of a PV sleeve preparation. B: APs recorded simultaneously from endocardial (Endo), epicardial (Epi), and midmyocardial (M) regions together with a pseudo-ECG in a LV wedge preparation. Lower panels show the rate dependence of Vmax normalized to the value at a basic cycle length (BCL) of 2,000 ms. Data are expressed as mean ± SD. *P < 0.05, chronic amiodarone versus control.