3-Dimensional ventricular electrical activation pattern assessed from a novel high-frequency electrocardiographic imaging technique: principles and clinical importance

Pavel Jurak, Laura R Bear, Uyên Châu Nguyên, Ivo Viscor, Petr Andrla, Filip Plesinger, Josef Halamek, Vlastimil Vondra, Emma Abell, Matthijs J M Cluitmans, Rémi Dubois, Karol Curila, Pavel Leinveber, Frits W Prinzen

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The study introduces and validates a novel high-frequency (100-400 Hz bandwidth, 2 kHz sampling frequency) electrocardiographic imaging (HFECGI) technique that measures intramural ventricular electrical activation. Ex-vivo experiments and clinical measurements were employed. Ex-vivo, two pig hearts were suspended in a human-torso shaped tank using surface tank electrodes, epicardial electrode sock, and plunge electrodes. We compared conventional epicardial electrocardiographic imaging (ECGI) with intramural activation by HFECGI and verified with sock and plunge electrodes. Clinical importance of HFECGI measurements was performed on 14 patients with variable conduction abnormalities. From 3 × 4 needle and 108 sock electrodes, 256 torso or 184 body surface electrodes records, transmural activation times, sock epicardial activation times, ECGI-derived activation times, and high-frequency activation times were computed. The ex-vivo transmural measurements showed that HFECGI measures intramural electrical activation, and ECGI-HFECGI activation times differences indicate endo-to-epi or epi-to-endo conduction direction. HFECGI-derived volumetric dyssynchrony was significantly lower than epicardial ECGI dyssynchrony. HFECGI dyssynchrony was able to distinguish between intraventricular conduction disturbance and bundle branch block patients.

Original languageEnglish
Article number11469
Pages (from-to)11469
Number of pages11
JournalScientific Reports
Volume11
Issue number1
DOIs
Publication statusPublished - 1 Jun 2021

Keywords

  • BUNDLE
  • CARDIAC RESYNCHRONIZATION THERAPY
  • EPICARDIAL POTENTIALS
  • EXCITATION

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