Quadripolar Crt Pacing Technology
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Quadripolar Leads in Cardiac€Resynchronization Therapy
Ma Despite the benefit of cardiac resynchronization therapy (CRT) in patients with heart failure and conduction delay, a considerable number of patients do not respond substantially. Left ventricular lead position is an important factor in response, restricted by the patient’s specific anatomy and local pathophysiology. Quadripolar leads could enhance response to CRT, offering 4 pacing location...
متن کاملFor LV pacing, four is greater than two
Shortly after the turn of the millennium, cardiac resynchronization therapy (CRT) was developed as a powerful treatment for heart failure with reduced ejection fraction (HFrEF) accompanied by significant electromechanical dysynchrony [1,2]. Despite the early success of CRT, it was clear that therewas room for improvement.With early generation unipolar and bipolar LV pacing leads, there was a sm...
متن کاملUse of a quadripolar left ventricular lead to achieve successful implantation in patients with previous failed attempts at cardiac resynchronization therapy
AIMS Problems with implanting a left ventricular (LV) lead during cardiac resynchronization therapy (CRT) procedures are not uncommon and may occur for a variety of reasons including phrenic nerve stimulation (PNS) and high capture thresholds. We aimed to perform successful CRT in patients with previous LV lead problems using the multiple pacing configurations available with the St Jude Quartet...
متن کاملQuadripolar Left Ventricular Lead in a Patient with CRT-D Does Not Overcome Phrenic Nerve Stimulation
Effective cardiac resynchronization therapy (CRT) requires an accurate atrio-biventricular pacing system. The innovative Quartet lead is a quadripolar, over-the-wire left ventricular lead with four electrodes and has recently been designed to provide more options and greater control in pacing vector selection. A lead with multiple pacing electrodes is a potential alternative to physical adjustm...
متن کاملCardiac Resynchronization Therapy Using Quadripolar Versus Non‐Quadripolar Left Ventricular Leads Programmed to Biventricular Pacing With Single‐Site Left Ventricular Pacing: Impact on Survival and Heart Failure Hospitalization
BACKGROUND In cardiac resynchronization therapy (CRT), quadripolar (QUAD) left ventricular (LV) leads are less prone to postoperative complications than non-QUAD leads. Some studies have suggested better clinical outcomes. METHODS AND RESULTS Clinical events were assessed in 847 patients after CRT-pacing or CRT-defibrillation using either QUAD (n=287) or non-QUAD (n=560), programmed to single...
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