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Related Concept Videos

Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...

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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Complete left atrial ablation with bipolar radiofrequency.

Stefano Benussi1, Simona Nascimbene, Andrea Galanti

  • 1Division of Cardiac Surgery, S Raffaele University Hospital, via Olgettina 60, 20132 Milan, Italy. stefano.benussi@hsr.it

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|February 5, 2008
PubMed
Summary

This study demonstrates that using bipolar radiofrequency for left atrial ablation, including the mitral line, is safe and cost-effective. This technique achieves excellent mid-term results for treating atrial fibrillation.

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Area of Science:

  • Cardiac Electrophysiology
  • Minimally Invasive Cardiac Surgery
  • Radiofrequency Ablation

Background:

  • Bipolar radiofrequency ablation is effective for atrial fibrillation but rarely used on the left isthmus due to concerns about coronary artery injury.
  • Current practices often involve incomplete lesion sets or supplementary unipolar devices, potentially compromising treatment efficacy.
  • A novel technique is presented to address these limitations and enable complete left atrial lesion sets using bipolar radiofrequency.

Purpose of the Study:

  • To describe and evaluate a technique for performing a complete left atrial lesion set, including the mitral line, using only bipolar radiofrequency.
  • To assess the safety, efficacy, and cost-effectiveness of this innovative bipolar radiofrequency ablation technique.

Main Methods:

  • A consecutive series of 70 patients underwent a complete left atrial lesion set using bipolar radiofrequency, with mitral valve disease as the primary indication in most cases.
  • The procedure involved epicardial marking of the coronary-free area, followed by endo-epicardial bipolar ablation along the mitral annulus and coronary sinus.
  • Results were compared to a control group of 33 patients who received a combination of bipolar and unipolar ablation devices.

Main Results:

  • The study achieved 100% survival with no major complications; one patient experienced transient atrioventricular groove hematoma.
  • Freedom from atrial fibrillation was 84% at 6 months and 81% at 1 year, with only two patients requiring permanent pacemakers for atrioventricular block.
  • The bipolar radiofrequency technique significantly reduced device costs compared to the combined bipolar-unipolar approach (1245€ vs 2403€ per patient).

Conclusions:

  • Performing the mitral line with bipolar radiofrequency is a safe and cost-effective strategy for complete left atrial ablation.
  • This single-device bipolar radiofrequency technique yields excellent mid-term clinical outcomes for patients with atrial fibrillation and/or mitral valve disease.