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Updated: Jun 19, 2026
08:05
Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice
Published on: June 29, 2022
Pro-arrhythmia in atrial fibrillation suppression pacing algorithms
Hamid Ghanbari1, Michelle Robinson, Jessica Ottino
1Division of Cardiac Electropysiology, Providence Heart Institute, Wayne State University, Southfield, MI, USA.
Summary
Atrial overdrive pacing effectively controlled atrial fibrillation (AF) in a patient with cardiomyopathy. Combining pacing with AV nodal modification resolved inappropriate shocks and suppressed AF burden.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Background:
- Atrial fibrillation (AF) management remains challenging.
- Atrial overdrive pacing algorithms show partial efficacy in AF control.
- Implantable cardioverter-defibrillators (ICDs) are used for arrhythmia management.
Observation:
- A 76-year-old male with cardiomyopathy and paroxysmal AF received a dual-chamber ICD.
- Preferential pacing (PP) algorithms were enabled, demonstrating significant AF control.
- Inappropriate ICD shocks occurred due to typical atrioventricular nodal re-entrant tachycardia (AVNRT).
Findings:
- Successful slow pathway modification eliminated AVNRT episodes.
- AF burden was suppressed with PP algorithms enabled post-ablation.
- The combined approach proved effective in managing both AF and AVNRT.
Implications:
- This case highlights the potential benefit of combining atrial pacing algorithms with ablation for complex arrhythmias.
- Tailored pacing strategies can improve AF management in patients with underlying cardiac conditions.
- Careful programming and troubleshooting are crucial to avoid inappropriate shocks from ICDs.
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