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Repetitive atrial activation during ongoing atrial fibrillation-comparison using different mapping algorithms:
Philipp Halbfass1,2, Patrick Müller3, Karin Nentwich4
1Heart Center Bad Neustadt, Salzburger Leite 1, 97616, Bad Neustadt an der Saale, Germany. halbfass@gmx.net.
Summary
Focal Impulse and Rotor Modulation (FIRM) mapping identified atrial fibrillation rotors, but a novel mapping system did not confirm these findings, suggesting discrepancies in repetitive activation detection.
Area of Science:
- Electrophysiology
- Cardiology
- Medical Technology
Background:
- Focal Impulse and Rotor Modulation (FIRM) is an ablation strategy targeting repetitive sources in atrial fibrillation (AF).
- Evaluating novel mapping algorithms for AF source identification is crucial for improving ablation efficacy.
Observation:
- A comparative study assessed FIRM-mapped rotors against a new multipolar mapping algorithm (CARTOSOUND™).
- Left atrial rotors were mapped using a 64-pole basket catheter and analyzed with both FIRM and CARTOSOUND™.
Findings:
- CARTOSOUND™ identified repetitive activation patterns at remote sites, differing from FIRM-mapped rotor cores.
- No corresponding repetitive activation patterns were found near FIRM rotor cores using the novel mapping technology.
Implications:
- Discrepancies between FIRM and CARTOSOUND™ highlight potential differences in detecting repetitive atrial activation.
- Further research is needed to reconcile these mapping technologies for AF ablation guidance.