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- Title
Endocavitary Structures in the Outflow Tract: Anatomy and Electrophysiology of the Conus Papillary Muscles.
- Authors
HAI, JO JO; DESIMONE, CHRISTOPHER V.; VAIDYA, VAIBHAV R.; ASIRVATHAM, SAMUEL J.
- 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.
- Subjects
HEART conduction system; CATHETER ablation; ECHOCARDIOGRAPHY; MYOCARDIUM; ELECTROPHYSIOLOGY; RIGHT heart ventricle; VENTRICULAR fibrillation; VENTRICULAR arrhythmia; ANATOMY; PHYSIOLOGY
- Publication
Journal of Cardiovascular Electrophysiology, 2014, Vol 25, Issue 1, p94
- ISSN
1045-3873
- Publication type
Article
- DOI
10.1111/jce.12291