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. 2019 May;16(5):781–790. doi: 10.1016/j.hrthm.2018.10.040

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© 2018 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Inferolateral J-wave syndrome due to abnormal depolarization. Top middle maps show bipolar electrogram voltage (purple indicating voltage >1 mV) with low voltage in inferior right ventricle. Bottom middle maps show activation mapping, with blue indicating the latest activated regions, here in the inferobasal right ventricle. Right: Fragmented electrograms (Egms) preceding and coincident with the J wave (white contour) in bipolar and unipolar (arrows) mode. Left: The 12 lead-ECG in a 19 year- old man who survived VF. ECG = electrocardiogram.