Cross-manufacturer mismatch between a quadripolar IS-4 lead and a defibrillator IS-4 port

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 locations along the distal end of the lead. Several quadripolar leads are available, all with different shapes and electrode spacing. Electrodes can be positioned in an ideal pacing location, determined by delayed mechanical or electrical activation, and away from phrenic nerve stimulation, high pacing thresholds, and fibrosis. Implantation is safe, with comparable or even lower complication rates compared with standard bipolar leads. Studies on biventricular pacing with quadripolar leads show apparent variations in acute hemodynamic response between pacing configurations, implying a patient-specific response. Pacing with an optimal pacing vector of a quadripolar lead benefits acute hemodynamic response. Multipoint pacing, pacing the left ventricle with 2 of 4 electrodes, could further enhance response. However, larger trials are needed to confirm these results, and results on long-term outcome of CRT with quadripolar leads and the benefit of multipoint pacing are warranted. We conclude that quadripolar leads are an important improvement in the treatment of heart failure patients with CRT.

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A comparison of the different features of quadripolar left ventricular pacing leads to deliver cardiac resynchronization therapy

Antoniadis

Behar

Sieniewicz

et al. 2017

Expert Review of Medical Devices

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Quadripolar LV pacing leads have now become the standard of care in CRT. Currently a multitude of lead options is available to the clinician. The selection process of the most appropriate lead is far from the 'one size fits all' concept. Further development of quadripolar LV leads is currently ongoing and it is anticipated to contribute towards the release of more technologically advantageous leads which will enable the delivery of optimal CRT therapy with the lowest rate of complications.

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Cross-manufacturer mismatch between a quadripolar IS-4 lead and a defibrillator IS-4 port

Cited by 3 publications

References 4 publications

Leads and Electrodes for Cardiac Implantable Electronic Devices

Leads and Electrodes for Cardiac Implantable Electronic Devices

Quadripolar Leads in Cardiac Resynchronization Therapy

A comparison of the different features of quadripolar left ventricular pacing leads to deliver cardiac resynchronization therapy

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