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Three-dimensional electroanatomical mapping (3D-EAM) can effectively guide conduction system pacing (CSP) in patients with left bundle branch block (LBBB) and dilated cardiomyopathy, offering a physiological alternative to conventional biventricular pacing. In this case, 3D-EAM enabled precise localization of the His bundle and identification of the conduction block, allowing successful non-selective His bundle pacing (HBP) with complete LBBB correction. The mapping system minimized fluoroscopy exposure, confirmed optimal lead positioning, and demonstrated marked electrical and clinical improvement, including LVEF recovery and NYHA class normalization. 3D-EAM thus represents a valuable adjunct in complex CRT procedures, enhancing accuracy, safety, and long-term resynchronization outcomes.

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3D-EAM to Assist Cardiac Resynchronization Procedure

  • 章节

  • 发表日期：

    2026年

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  • Lina Marcantoni,
  • Francesco Zanon

摘要

Three-dimensional electroanatomical mapping (3D-EAM) can effectively guide conduction system pacing (CSP) in patients with left bundle branch block (LBBB) and dilated cardiomyopathy, offering a physiological alternative to conventional biventricular pacing. In this case, 3D-EAM enabled precise localization of the His bundle and identification of the conduction block, allowing successful non-selective His bundle pacing (HBP) with complete LBBB correction. The mapping system minimized fluoroscopy exposure, confirmed optimal lead positioning, and demonstrated marked electrical and clinical improvement, including LVEF recovery and NYHA class normalization. 3D-EAM thus represents a valuable adjunct in complex CRT procedures, enhancing accuracy, safety, and long-term resynchronization outcomes.