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First experience and validation of the extended early meets late (EEML) tool as part of the novel CARTO software HD COLORING

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Journal of Interventional Cardiac Electrophysiology Aims and scope Submit manuscript

Abstract

Background

With CARTO HD COLORING, a new enhanced software-based map visualization is available to highlight among others potential areas of conduction block in complex arrhythmias (extended early meets late (EEML)). The ideal settings of thresholds are still unclear and are examined here by studying 12 left atrial arrhythmias.

Methods

Ten patients with left atrial tachycardia underwent high-density activation mapping of the left atrium. Areas of local conduction block were visualized with different extended early meets late (EEML) thresholds (75/25%; 80/20%; 85/15%; 90/10%) and compared with ripple maps for verification.

Results

Settings of 80/20% or 85/15% were more accurate than the default settings of 75/25% in displaying the actual amount of conduction block as assessed by ripple maps.

Conclusion

HD COLORING leads to further insights into complex tachycardias through a new Voxel Map Surface Concept and color-based visualization of local conduction block. It can be assumed that individual adaption of extended early meets late (EEML) thresholds should be applied for a more accurate visualization of local conduction block.

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Authors and Affiliations

  1. Heart Center, Segeberger Kliniken (Academic Teaching Hospital of the Universities of Kiel, Lübeck and Hamburg), Am Kurpark 1, 23795, Bad Segeberg, Schleswig Holstein, Germany

    L. Iden, R. Weinert, S. Groschke, K. Kuhnhardt, G. Richardt & M. Borlich

Authors
  1. L. Iden
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  2. R. Weinert
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  3. S. Groschke
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  4. K. Kuhnhardt
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  5. G. Richardt
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  6. M. Borlich
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Corresponding author

Correspondence to M. Borlich.

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Conflict of interest

L.I. has received lecture and consultant honoraria from Biosense Webster. M.B. has received consultant honoraria from Biosense Webster. R.W., S.G., K.K., and G.R. have nothing to declare. Regarding this article, none of the authors states any conflict of interest.

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This article is original, with no portion under simultaneous consideration for publication elsewhere or previously published. All authors have read and approved the submission.

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Iden, L., Weinert, R., Groschke, S. et al. First experience and validation of the extended early meets late (EEML) tool as part of the novel CARTO software HD COLORING. J Interv Card Electrophysiol 60, 279–285 (2021). https://doi.org/10.1007/s10840-020-00726-w

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  • DOI: https://doi.org/10.1007/s10840-020-00726-w

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