Non-invasive epicardial and endocardial electrocardiographic imaging for scar-related ventricular tachycardia.

ABSTRACT:

Aims

Contact mapping is currently used to guide catheter ablation of scar-related ventricular tachycardia (VT) but usually provides incomplete assessment of 3D re-entry circuits and their arrhythmogenic substrates. This study investigates the feasibility of non-invasive electrocardiographic imaging (ECGi) in mapping scar substrates and re-entry circuits throughout the epicardium and endocardium.

Methods and results

Four patients undergoing endocardial and epicardial mapping and ablation of scar-related VT had computed tomography scans and a 120-lead electrocardiograms, which were used to compute patient-specific ventricular epicardial and endocardial unipolar electrograms (CEGMs). Native-rhythm CEGMs were used to identify sites of myocardial scar and signal fractionation. Co

SUBMITTER: Wang L 

PROVIDER: S-EPMC6140441 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature