Arrhythmias & electrophysiology
Optimal Annotation of Local Activation Time in Ventricular Tachycardia Substrate Mapping
Authors' conclusion
Annotation with LAT-dV/dt and LATDWOI are suboptimal in VT substrate mapping.
Study context
- Population
- Patients with high-density ventricular tachycardia (VT) substrate maps and a defined critical site for VT re-entry
- Participants
- 50 cases
- Exposure
- 5 local activation time (LAT) annotation methods in VT substrate maps
- Outcome
- Identification of critical sites using deceleration zones
Main finding
As reported in the abstract
Deceleration zone present at critical site
Observational data: associations, not effects.
Further findings
| Outcome | Values |
|---|---|
| Late potentials correctly annotated with LAT-dV/dt · larger far field signals often annotated preferentially | LAT-dV/dt 33% |
Original publication
Optimal Annotation of Local Activation Time in Ventricular Tachycardia Substrate Mapping. JACC Clin Electrophysiol. Published 13 December 2023. doi:10.
Summarised from the published abstract; every number is checked against it