Arrhythmias & electrophysiology
The Use of Local Activation Timing Histogram in Ablation of Focal and Re-Entrant Atrial Tachycardias
Authors' conclusion
LAT histograms can help distinguish focal from re-entrant Ats and identify effective ablation sites.
Study context
- Population
- Focal and re-entrant atrial tachycardias with activation mapping (CARTO 3 v7), single academic tertiary centre
- Participants
- 52 atrial tachycardias (ATs)
- Exposure
- Focal vs re-entrant ATs
- Focaln = 17reference
- Re-entrantn = 35
- Outcome
- LAT histogram features associated with focal vs re-entrant mechanism; LAT histogram-guided ablation targets vs actual ablation sites
Methodological detailssingle-centre
- Single-centre
Main finding
As reported in the abstract
LAT histogram valleys
Re-entrant
3
IQR 2–4
Focal
1
IQR 1–1
P < 0.001
Observational data: associations, not effects.
Further findings
Tachycardia cycle length · significantly shorter in re-entrant
P = 0.006
Original publication
The Use of Local Activation Timing Histogram in Ablation of Focal and Re-Entrant Atrial Tachycardias. JACC Clin Electrophysiol. Published 4 October 2023. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →