Effectiveness and Reliability of Selected Site Pacing for Avoidance of Phrenic Nerve Stimulation in CRT Patients with Quadripolar LV Leads: The EffaceQ Study

Abstract

Quadripolar LV leads yield high numbers of patients with viable LVPCs and alternatives for noninvasive repositioning of LV pacing.

Outcomes of cardiac resynchronization therapy using left ventricular quadripolar leads

“…reported a 92% success rate for quadripolar lead implant when bipolar lead failed because of PNS or a high pacing threshold. Our study showed a high implant success rate without LV lead placement failure, in agreement with other studies . This success rate is due to the additional pacing configuration options for quadripolar leads that improved the acceptable pacing threshold and PNS.…”

Performance of Anatomically Designed Quadripolar Left Ventricular Leads: Results from the NAVIGATE X4 Clinical Trial

“…An additional benefit of nonapical pacing is that, irrespective of pacing configuration (unipolar, extended bipolar, true bipolar), PNS is less commonly observed when pacing is performed from the basal region of the heart . The proximal electrodes of the ACUITY X4 leads had lower rates of PNS both during acute evaluation (6% during true bipolar testing) and clinically during follow‐up (5%).…”

Percutaneous epicardial pacing using a novel transverse sinus device

“…27 Epicardial pacemakers can also cause extracardiac stimulation. 27 Epicardial pacemakers can also cause extracardiac stimulation.…”