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Related Experiment Videos

Remote controlled magnetically guided pulmonary vein isolation in canines.

Scott Greenberg1, Walter Blume, Mitchell Faddis

  • 1Washington University School of Medicine, St. Louis, Missouri, USA.

Heart Rhythm
|January 10, 2006
PubMed
Summary

This study shows that a new remote-controlled magnetic catheter system is safe and effective for pulmonary vein isolation in canines, potentially improving atrial fibrillation ablation. This technology may reduce risks for patients and operators.

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Area of Science:

  • Cardiovascular Interventions
  • Medical Device Technology

Background:

  • Atrial fibrillation (AF) ablation is challenging, with significant risks and technical difficulties.
  • A novel magnetically guided catheter system offers potential solutions.
  • The study utilized a 3D computed tomogram (CT) for precise navigation.

Purpose of the Study:

  • To evaluate the feasibility of pulmonary vein isolation using a novel, remote-controlled, magnetically guided catheter.
  • To assess the safety and efficacy of this new technology in a preclinical model.

Main Methods:

  • Seven healthy male canines underwent CT scans for anatomical reference.
  • A 7-Fr irrigated magnetic catheter was guided transseptally to the left atrium.
  • Radiofrequency energy was delivered for superior pulmonary vein isolation, guided by CT and magnetic vectors.

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Main Results:

  • Successful isolation of all 14 pulmonary veins was achieved.
  • No stenosis was observed at 80-100 days post-procedure, indicating safety.

Conclusions:

  • Remote-controlled catheter ablation using magnetic guidance is safe and effective for pulmonary vein isolation.
  • This technology has the potential to facilitate curative AF ablation in humans.
  • It may also reduce operator risks, including radiation exposure and procedural duration.