Co-Author(s):
Timothy Betts, MD FRCP - Oxford University Hospitals NHS Foundation
Trust
Oxford University Hospitals NHS Foundation Trust
John Radcliffe Hospital Headley Way
Introduction | Objectives: “Supermap” is a novel algorithm for the mapping of organised atrial
rhythms using non-contact charge density mapping (Acutus Medical).We
report our early experience.
Methods: Patients enrolled in parallel research studies using the AcQMap system
were included. Mapping of both atrial tachycardias (AT) and paced
rhythms (PR) was performed using the Supermap non-contact algorithm and,
prior to analysis, was repeated with contact mapping using Ensite
Precision (Abbott Medical). AT mechanism or linear block (in the case of
PR) was confirmed using a combination of mapping results, conventional
electrophysiological manoeuvres, and the response to ablation. The time
taken for map creation, point density and accuracy were compared between
the 2 systems.
Results: Ten patients (age 64(IQR10), 40% male) were included with 26 maps
obtained (20 ATs, 6 PRs; 17 left atrium). Six had previous ablation, 2
cardiac surgery. Parallel contact maps were obtained in 22 (12 using
circular mapping catheters, 4 using HD grid, 6 using ablation catheter).
Supermap was accurate in 92% and the contact map in 82% (p=0.3923).
Mapping was faster using Supermap (4min and 32s (IQR 1min 42s) vs 8min
21s (IQR 4min 20s), p< 0.0005) and achieved a higher point
density (5222 (IQR6161) vs 953 (IQR2777), p=0.0014).
Conclusions: Supermap is a fast and accurate tool for mapping of both atrial
tachycardias and paced rhythms.
AFS 2021-38