Arrhythmias & electrophysiology
Left atrial total emptying fraction measured by cardiovascular magnetic resonance imaging predicts low-voltage areas detected during electroanatomical mapping
Authors' conclusion
Left atrial TEF and the CHA2DS2-VASc score were independently associated with the presence of LVAs found during LA electroanatomical mapping.
Study context
- Population
- Patients undergoing first-time radiofrequency catheter ablation (RFCA) for paroxysmal or persistent atrial fibrillation (AF), in stable sinus rhythm during pre-procedural cardiovascular magnetic resonance (CMR)
- Participants
- 259 consecutive patients
- Exposure
- Patients with low-voltage areas (LVAs) vs without LVAs
- LVAsn = 25
- Outcome
- Association of CMR-derived LA function and dimension parameters with presence of LVAs on LA voltage mapping
Methodological detailsconsecutive patients
- Consecutive patients
Main finding
As reported in the abstract
Presence of LVAs
LVAs
9.7%
25
- Left atrial (LA) total emptying fraction (TEF) independently associated with LVAs (multivariate), OR 0.885, 95% CI 0.846-0.926
- P < 0.001
- CHA2DS2-VASc score independently associated with LVAs (multivariate), OR 1.507, 95% CI 1.115-2.038
- P = 0.008
Observational data: associations, not effects.
Original publication
Left atrial total emptying fraction measured by cardiovascular magnetic resonance imaging predicts low-voltage areas detected during electroanatomical mapping. Europace. Published 14 November 2023. doi:10.
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