Arrhythmias & electrophysiology
Electrogram Morphology Recurrence for Mapping Persistent Atrial Fibrillation: Initial vs Redo Catheter Ablation
Authors' conclusion
EMR identified the shortest CLR sites in the PVs in 59% of patients undergoing initial persistent AF ablation, consistent with reported success rates of ∼50% for PV isolation.
Study context
- Population
- Patients undergoing ablation for persistent atrial fibrillation (AF)30 males
- Participants
- 42 patients
- Comparison
- First vs redo ablation for persistent AF
- Group 1n = 32reference
- Group 2n = 10
- Outcome
- EMR in LA and RA: most recurrent electrogram (EGM) morphology frequency (Rec%) and recurrence cycle length (CLR)
Methodological detailsmultisite left atria (LA)/right atria (RA) mapping
- Multisite LA/RA mapping
Main finding
As reported in the abstract
Minimum CLR
- Group 2 vs Group 1: P = 0.20
- Group 1: P = 0.0005
- Group 2 vs Group 1: P = 0.75
- Groups 1 and 2 values reported in order in one sentence
Further findings
Shortest CLR in the LA
P = 0.04
| Outcome | Group 1 | Group 2 | P value |
|---|---|---|---|
| Shortest CLR in the PVs | P = 0.01 | ||
| Of | 32 | 10 |
Sites with Rec% <50%
- Most sites had Rec% <50%
- 77.6%
Parts of this Brief are withheld: the automatic checks could not confirm them against the abstract.
Original publication
Electrogram Morphology Recurrence for Mapping Persistent Atrial Fibrillation: Initial vs Redo Catheter Ablation. JACC Clin Electrophysiol. Published 18 January 2023. doi:10.
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