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Case_report
Moderator band VT may arise from septal scar after LAD occlusion; extends etiology beyond normal hearts and leaves open mechanistic studies.
Key Teaching Points•Ventricular arrhythmias arising from the moderator band typically occur in patients without structural heart disease.•The moderator band, a prominent endocavitary band of tissue in the right ventricle, receives its blood supply from the septal perforators of the left anterior descending artery (LAD).•Occlusion of the LAD with development of septal infarct may result in scar-mediated ventricular arrhythmias with involvement of the moderator band. •Ventricular arrhythmias arising from the moderator band typically occur in patients without structural heart disease.•The moderator band, a prominent endocavitary band of tissue in the right ventricle, receives its blood supply from the septal perforators of the left anterior descending artery (LAD).•Occlusion of the LAD with development of septal infarct may result in scar-mediated ventricular arrhythmias with involvement of the moderator band.
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Kannan et al. (2019) studied this question.
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