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. Author manuscript; available in PMC: 2013 Dec 1.
Published in final edited form as: Circ Arrhythm Electrophysiol. 2012 Oct 1;5(6):10.1161/CIRCEP.111.969022. doi: 10.1161/CIRCEP.111.969022

Figure 1.

Figure 1

(A) Premature extrastimuli initiate AF at CL 500/210 in a paroxysmal AF patient, with an activation latency of 19 msec. (B) Patient with Persistent AF with activation latency of 62 msec at 500/250, and AF is not initiated. Maximum activation latency (C) is greater in persistent (blue) versus paroxysmal (red) AF, illustrated by these representative patients. Baseline action potential duration (APD) restitution slope (D) was <1 in persistent AF (blue) but >1 in paroxysmal (red), as shown for these individuals. Key: ABL-D=distal electrode of MAP catheter.