Correlation of spatial patterns of endocardial pace mapping to underlying scar topography in patients with scar‐related ventricular tachycardia

Introduction Endocardial pace mapping (PM) can identify conducting channels for ventricular tachycardia (VT) circuits in patients with structural heart disease (SHD). Recent findings show the temporal and spatial pattern of PM may aid identification of the surface harboring VT isthmii. The specific...

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Bibliographic Details
Published in:Journal of cardiovascular electrophysiology 2023-03, Vol.34 (3), p.638-649
Main Authors: Kotake, Yasuhito, Bennett, Richard, Silva, Kasun De, Bhaskaran, Ashwin, Kanawati, Juliana, Turnbull, Samual, Zhou, Julia, Kumar, Saurabh, Campbell, Timothy
Format: Article
Language:English
Subjects:
Aged
Cardiac arrhythmia
Catheter Ablation
Cicatrix
Echocardiography
Endocardium
Heart Diseases
Humans
intracardiac echocardiography
Mapping
Middle Aged
pace mapping
Pericardium
Tachycardia
Tachycardia, Ventricular
Topography
Ventricle
ventricular tachycardia
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Summary:Introduction Endocardial pace mapping (PM) can identify conducting channels for ventricular tachycardia (VT) circuits in patients with structural heart disease (SHD). Recent findings show the temporal and spatial pattern of PM may aid identification of the surface harboring VT isthmii. The specific correlation of PM patterns to scar topography has not been examined. Objective To correlate the pattern of endocardial PMs to underlying scar topography in SHD patients with VT. Methods Data from patients undergoing VT ablation from August 2018 to February 2022 were reviewed. Results Sixty‐three patients with SHD‐related VT (mean age 65 ± 14 years) with 83 endocardial PM correlation maps were analysed. Two main correlation patterns were identified, an “abrupt‐change correlation pattern (AC‐pattern)” and “centrifugal‐attenuation correlation pattern (CA‐pattern).” AC‐pattern had lower scar ratio (unipolar/bipolar % scar area; 1.1 vs. 1.5, p 
ISSN:1045-3873
1540-8167
DOI:10.1111/jce.15811