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Adenosine-dependent concealed accessory pathway

Diana Tint1, Csaba Kun, Ildiko Beke

  • 1Institute of Cardiology, University of Debrecen, Debrecen, Hungary.

Pacing and Clinical Electrophysiology : PACE
|March 23, 2011
PubMed

Insights

Adenosine can reveal hidden accessory pathways after ablation, which usually conduct only when adenosine is administered. This finding may help reduce recurrence rates after accessory pathway ablation procedures.

Area of Science:

  • Electrophysiology
  • Cardiology

Background:

  • Adenosine is commonly used post-radiofrequency (RF) ablation to assess retrograde accessory pathway conduction by blocking the atrioventricular node.
  • Assessing accessory pathway conduction is crucial for preventing arrhythmia recurrence after ablation.

Observation:

  • A concealed accessory pathway was observed to conduct transiently only after adenosine administration.
  • This represents the first report of an adenosine-dependent concealed accessory pathway.

Findings:

  • Adenosine administration can elicit conduction in previously undetectable accessory pathways.
  • Dormant accessory pathway conduction can be unmasked by adenosine post-RF ablation.

Implications:

  • This finding has potential clinical implications for reducing accessory pathway ablation recurrence.
  • It provides valuable insights into adenosine's ability to elicit dormant conduction, relevant to pulmonary vein isolation procedures.

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