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Updated: Mar 7, 2026

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Entrainment Mapping.

Saurabh Kumar1, Usha B Tedrow1, William G Stevenson1

  • 1Arrhythmia Service, Cardiovascular Division, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.

Cardiac Electrophysiology Clinics
|February 8, 2017
PubMed
Summary
This summary is machine-generated.

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Entrainment mapping helps identify critical regions of ventricular tachycardia (VT) for ablation. This technique is crucial for targeting scar-related VT in structural heart disease.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Devices

Background:

  • Ventricular tachycardia (VT) in structural heart disease often arises from macro-reentrant circuits within myocardial scar.
  • Effective ablation of VT requires precise identification of the arrhythmia's origin and critical pathways.

Purpose of the Study:

  • To review the principles and application of entrainment mapping for catheter ablation of scar-related VT.
  • To elucidate the role of entrainment mapping in understanding VT mechanisms and guiding ablation strategies.

Main Methods:

  • Discussion of various mapping techniques including substrate, activation sequence, and pace-mapping.
  • Detailed explanation of entrainment mapping principles and interpretation.
  • Focus on catheter ablation targeting scar-related VT.
Keywords:
Catheter ablationConcealed entrainmentEntrainment mappingFusionPostinfarctionResettingVentricular tachycardia

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Main Results:

  • Entrainment mapping provides critical information about VT circuits, differentiating stable from unstable reentrant pathways.
  • It aids in identifying specific areas within the scar that sustain VT, crucial for successful ablation.
  • Successful application of entrainment mapping can lead to targeted ablation and improved patient outcomes.

Conclusions:

  • Entrainment mapping is an essential technique for guiding catheter ablation of scar-related VT.
  • Understanding VT mechanisms through mapping improves the efficacy and safety of ablation procedures.
  • Further refinement of mapping techniques continues to advance the treatment of complex arrhythmias.