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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Circ Arrhythm Electrophysiol. 2016 Nov;9(11):e004409. doi: 10.1161/CIRCEP.116.004409

Figure 6.

Figure 6

Sequential activation about a line of block during atrial flutter can appear as a rotor in the phase map. A: Activation isochrones maps (two views) during one cycle of typical RA flutter. The macroreentry circuit that drives the flutter is seen in the anterior view (arrows). There is a line of block in the posterior RA (thick black line) and sequential activation about it. B: This sequential activation appears as a rotor (white arrow) on the posterior RA in the corresponding phase map.