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Atrioventricular accessory pathway with anterograde decremental conduction property
Satoshi Fujita1, Eitaro Fujii, Shinya Sugiura
1Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Tsu, Mie, Japan.
BMJ Case Reports
|June 20, 2013
Summary
This study describes a rare case of a right posteroseptal accessory pathway exhibiting decremental conduction. Successful ablation was confirmed by the "bump phenomenon," a unique marker of successful radiofrequency energy delivery.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Anatomy
Background:
- Atrioventricular (AV) accessory pathways can cause arrhythmias.
- Understanding accessory pathway properties is crucial for effective ablation.
Observation:
- A case of an AV accessory pathway with anterograde decremental conduction was identified.
- δ wave polarity indicated a right posteroseptal location.
- Wenckebach-type block occurred during atrial pacing over the accessory pathway without QRS changes.
Findings:
- The accessory pathway demonstrated decremental conduction properties.
- Mechanical block was induced during mapping, preceding ablation.
- Radiofrequency ablation successfully eliminated the accessory pathway.
- The
- Implications
Implications:
- This case highlights a unique accessory pathway behavior.
- The
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