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Non-invasive three-dimensional electrical activation mapping to predict cardiac resynchronization therapy response: site of latest left ventricular activation relative to pacing site

  • Leonor Parreira
  • , Alexey Tsyganov
  • , Elena Artyukhina
  • , Kevin Vernooy
  • , Claudio Tondo
  • , Pedro Adragão
  • , Ciro Ascione
  • , Pedro Carmo
  • , Salomé Carvalho
  • , Matthias Egger
  • , António Ferreira
  • , Mohammed Ghossein
  • , Magnus Holm
  • , Vitaly Kalinin
  • , Maria Malakhova
  • , Mathias Meine
  • , Silvia Nunes
  • , Dmitry Podolyak
  • , Amiran Revishvili
  • , Albina Shapieva
  • Vera Stepanova, Antonius van Stipdonk, Irina Taymasova, Philippe Wouters, Stepan Zubarev, Francisco Leyva, Angelo Auricchio, Niraj Varma*
*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

Aims Pacing remote from the latest electrically activated site (LEAS) in the left ventricle (LV) may diminish response to cardiac resynchronization therapy (CRT). We tested whether proximity of LV pacing site (LVPS) to LEAS, determined by non-invasive three-dimensional electrical activation mapping [electrocardiographic Imaging (ECGI)], increased likelihood of CRT response. Methods Consecutive CRT patients underwent ECGI and chest/heart computed tomography 6-24 months of post-implant. Latest and results electrically activated site and the distance to LVPS (dp) were assessed. Left ventricular end-systolic volume (LVESV) reduction of ≥15% at clinical follow-up defined response. Logistic regression probabilistically modelled non-response; variables included demographics, heart failure classification, left bundle branch block (LBBB), ischaemic heart disease (IHD), atrial fibrillation, QRS duration, baseline ejection fraction (EF) and LVESV, comorbidities, use of CRT optimization algorithm, angiotensin-converting enzyme inhibitor(ACE)/angiotensin-receptor blocker (ARB), beta-blocker, diuretics, and dp. Of 111 studied patients [64 ± 11 years, EF 28 ± 6%, implant duration 12 ± 5 months (mean ± SD), 98% had LBBB, 38% IHD], 67% responded at 10 ± 3 months post CRT-implant. Latest electrically activated sites were outside the mid-to-basal lateral segments in 35% of the patients. dp was 42 ± 23 mm [31 ± 14 mm for responders vs. 63 ± 24 mm non-responders (P < 0.001)]. Longer dp and the lack of use of CRT optimization algorithm were the only independent predictors of non-response [area under the curve (AUC) 0.906]. dp of 47 mm delineated responders and non-responders (AUC 0.931). Conclusion The distance between LV pacing site and latest electrical activation is a strong independent predictor for CRT response. Noninvasive electrical evaluation to characterize intrinsic activation and guide LV lead deployment may improve CRT efficacy.

Original languageEnglish
Pages (from-to)1458-1466
Number of pages9
JournalEuropace
Volume25
Issue number4
DOIs
Publication statusPublished - 1 Apr 2023
Externally publishedYes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Cardiac resynchronization therapy
  • Dilated cardiomyopathy
  • ECGI
  • Electrocardiographic imaging
  • Heart failure
  • Ischaemic cardiomyopathy
  • Non-invasive 3D electrical activation mapping

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