Unique preferential conduction within the isolated septal substrate in a patient with ventricular tachycardia complicated with non-ischemic dilated cardiomyopathy

Masaya Watanabe, Hisashi Yokoshiki, Hirofumi Mitsuyama, Kazuya Mizukami, Hiroyuki Tsutsui

Research output: Contribution to journalArticle

Abstract

We describe the case of a 67-year-old woman with non-ischemic dilated cardiomyopathy who underwent successful radiofrequency catheter ablation for ventricular tachycardia (VT) originated from the isolated ventricular septal substrate. Pacemapping exhibited either left, identical to clinical VT, or right bundle branch block like wide QRS morphology. Time interval from the stimulus to QRS onset (St-QRS) was prolonged at the center of the substrate, while St-QRS at the border was shortened. Difference in the morphology of pacemapping was dependent on whether or not the pacing stimulus could propagate directly into the right ventricle due to the possible intramural conduction disturbance.

Original languageEnglish
Pages (from-to)682-685
Number of pages4
JournalJournal of Electrocardiology
Volume46
Issue number6
DOIs
Publication statusPublished - Nov 2013

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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