Endocavitary structures in the outflow tract: Anatomy and electrophysiology of the Conus Papillary Muscles

Jo Jo Hai, Christopher V. Desimone, Vaibhav R. Vaidya, Samuel J. Asirvatham

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Ablation and Mapping of the Conus Papillary Muscle Catheter ablation is an increasingly used and successful treatment choice for right ventricular outflow tract (RVOT) arrhythmias. While the role of endocavitary structures and the regional morphology of the ventricular inflow tract and the right atrium as a cause for difficulty with successful ablation are well described, similar issues within the RVOT are not well understood. It is also not commonly appreciated that one of the papillary muscles is located within the proximal RVOT. We report 3 patients in which ventricular arrhythmia was targeted and ablated in the conus papillary muscle. The anatomic features, potential role of the fascicular conduction system, and unique challenges with mapping arrhythmia arising from this structure are discussed.

Original languageEnglish (US)
Pages (from-to)94-98
Number of pages5
JournalJournal of cardiovascular electrophysiology
Volume25
Issue number1
DOIs
StatePublished - 2014

Keywords

  • Lancisi bundle
  • Purkinje fiber
  • conus papillary muscle
  • endocavitary structures
  • premature ventricular complex
  • right ventricular outflow tract
  • ventricular fibrillation
  • ventricular tachycardia

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

Fingerprint Dive into the research topics of 'Endocavitary structures in the outflow tract: Anatomy and electrophysiology of the Conus Papillary Muscles'. Together they form a unique fingerprint.

  • Cite this