MultipOlar Left Ventricular Electrode Instability Trial

Multipolar Left Ventricular Electrode Instability Trial

Characterization of pacing thresholds in available pacing vectors of quadripolar leads used for cardiac resynchronization therapy in a short term follow-up.

Multipolar left ventricular leads are increasingly used in cardiac resynchronization therapy. Lead dislodgment requiring re-intervention is rare. However, data on minor lead movements which may affect pacing capabilities and application of new pacing algorithms is scarce. Aim of the study is to characterize pacing thresholds of each of the implanted electrodes on quadripolar leads in a short term follow-up.

Inclusion Criteria:

• De novo implantation of left ventricular multipolar leads.

Exclusion Criteria:

• Cardiogenic shock
• Device infection
• Revision for previously dislodged left ventricular lead
• Age below 18 years
• Pregnancy
• Patients under tutelage