Journal article
Retrospective Window of Interest Annotation Provides New Insights Into Functional Channels in Ventricular Tachycardia Substrate
J Hawson, A Al-kaisey, RD Anderson, D Chieng, L Segan, T Watts, T Campbell, J Morton, A McLellan, P Sparks, A Lee, EP Gerstenfeld, HH Hsia, A Voskoboinik, S Prabhu, B Pathik, S Kumar, P Kistler, J Kalman, G Lee
Jacc Clinical Electrophysiology | ELSEVIER | Published : 2023
Abstract
Background: Accurate annotation of local activation time is crucial in the functional assessment of ventricular tachycardia (VT) substrate. A major limitation of modern mapping systems is the standard prospective window of interest (sWOI) is limited to 490 to 500 milliseconds, preventing annotation of very late potentials (LPs). A novel retrospective window of interest (rWOI), which allows annotation of all diastolic potentials, was used to assess the functional VT substrate. Objectives: This study sought to investigate the utility of a novel rWOI, which allows accurate visualization and annotation of all LPs during VT substrate mapping. Methods: Patients with high-density VT substrate maps ..
View full abstractGrants
Funding Acknowledgements
Dr Kistler has received fellowship support from Biosense Webster. Dr Kalman is supported by a National Health and Medical Research Council of Australia practitioner fellowship and by fellowship support from Biosense Webster. Dr Hsia has received honoraria from Biosense Webster. Dr Kalman has received research support from Biosense Webster. Dr Lee has received speaker honoraria from Bio- sense Webster. All other authors have reported that they have no relationships relevant to the contents of this paper to disclose.