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Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
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[Late failure of left ventricular leads stabilized using the retained guidewire technique in patients undergoing

Elena Arbelo1, Antonio García-Quintana, Eduardo Caballero

  • 1Servicio de Cardiología, Hospital Universitario de Gran Canaria Dr. Negrín, Las Palmas de Gran Canaria, España. elenaarbelo@secardiologia.es

Revista Espanola De Cardiologia
|January 29, 2008
PubMed

Insights

The retained guidewire technique for stabilizing left ventricular leads may cause delayed electrode damage, including deformation and insulation deterioration, years after implantation. This method is not recommended due to potential long-term complications in cardiac resynchronization therapy.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Medical Device Technology

Context:

  • Cardiac resynchronization therapy (CRT) involves lead placement.
  • Repetitive dislocation of the left ventricular (LV) lead can complicate CRT procedures.
  • The retained guidewire technique was explored as a solution for lead stabilization.

Purpose:

  • To evaluate the long-term safety and efficacy of the retained guidewire technique for LV lead stabilization.
  • To investigate potential complications associated with this technique in CRT patients.

Summary:

  • The retained guidewire technique was used in 3 out of 185 CRT patients (1.6%) due to recurrent LV lead dislocation.
  • While initial parameters were normal, delayed issues (6 months-1 year) included elevated impedance, sensing/pacing changes, electrode deformation, fracture, and insulation deterioration.
  • Macroscopic dislocation was not evident, but material degradation was confirmed via laboratory analysis.

Impact:

  • The retained guidewire technique is associated with significant delayed electrode damage.
  • This technique should be avoided in CRT procedures to prevent long-term lead complications.
  • Findings highlight the need for careful consideration of lead stabilization methods and long-term device integrity.

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