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. Author manuscript; available in PMC: 2018 Jul 1.
Published in final edited form as: Circ Arrhythm Electrophysiol. 2017 Jul;10(7):e005105. doi: 10.1161/CIRCEP.116.005105

Figure 1.

Figure 1

Electrical substrate in a healthy adult. (A) Sinus rhythm activation with a typical RV epicardial breakthrough (asterisk) and normal conduction. RV (1) and LV (2) unipolar EGMs have a normal morphology free of fractionation. (B) Schematic maps of normal electrical properties in anatomical regions based on 20 control subjects. Left: fractionation z-score. Right: Fridericia-corrected ARI. The maps show absence of fractionation and ARI values within the normal range. AT: activation time. RA: right atrium. LA: left atrium. RV: right ventricle. LV: left ventricle. ARI: activation-recovery interval. EGM: electrogram.