Cardiac morphology relevant to mapping

Niyada Naksuk, Vaibhav R. Vaidya, Nirusha Lachman, Samuel J. Asirvatham

Research output: Chapter in Book/Report/Conference proceedingChapter


An essential component for safe mapping and ablation is a deep understanding of the relevant cardiac morphology and topographical anatomy. This chapter exemplifies the method of correlating cardiac anatomy with the challenges of detailed mapping and requirement for safe energy delivery. A sub-Eustachian pouch may be present between the tricuspid valve and the Eustachian ridge and vary from a slight depression of the cavotricuspid isthmus floor or a deep recess up to 10µmm at its maximum depth. The strip of atrial myocardium lying between the orifice of the left inferior pulmonary vein and the mitral valve annulus is the mitral isthmus. The ventricular outflow tracts are a common location to target a variety of ventricular arrhythmias. Ventricular arrhythmias can arise from endocavitary structures such as papillary muscles, the moderator band, false tendons as well as nearby conduction system.

Original languageEnglish (US)
Title of host publicationCardiac Mapping
Number of pages15
ISBN (Electronic)9781119152637
ISBN (Print)9781119152590
StatePublished - Apr 5 2019


  • Cardiac morphology
  • Cavotricuspid isthmus
  • Distal conduction system
  • Endocavitary structures
  • Mitral isthmus
  • Point-to-point mapping
  • Sub-Eustachian pouch
  • Topographical anatomy
  • Ventricular arrhythmias
  • Ventricular outflow tracts

ASJC Scopus subject areas

  • General Medicine


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