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Postoperative Performance of the Quartet ® Left Ventricular Heart Lead
Author(s) -
TOMASSONI GERY,
BAKER JAMES,
CORBISIERO RAFFAELE,
LOVE CHARLES,
MARTIN DAVID,
NIAZI IMRAN,
SHEPPARD ROBERT,
WORLEY SETH,
BEAU SCOTT,
GREER G. STEPHEN,
ARYANA ARASH,
CAO MICHAEL,
HARBERT NICOLE,
ZHANG SUHONG
Publication year - 2013
Publication title -
journal of cardiovascular electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.193
H-Index - 138
eISSN - 1540-8167
pISSN - 1045-3873
DOI - 10.1111/jce.12065
Subject(s) - medicine , lead (geology) , cardiology , implant , ventricular pacing , ejection fraction , heart failure , surgery , geomorphology , geology
Promote ® Q CRT‐D and Quartet ® LV Lead Study . Introduction : The Quartet ® left ventricular (LV) lead is the first with 4 pacing electrodes (tip and 3 rings) that enables pacing from 10 different pacing vectors. Postoperative performance of this lead was evaluated in a prospective, nonrandomized, multicenter IDE study. Methods : Patients with standard indications for CRT‐D were enrolled. Electrical performance and presence of phrenic nerve stimulation (PNS) were assessed during pacing from each of 10 vectors at predischarge (within 7 days), 1 month, and 3 months postimplant. Results : The Quartet LV lead was implanted successfully in 170 patients (95.5% implant success rate, 68 ± 11 years, 68.5% male, LVEF: 25 ± 7%, NYHA class III: 98.3% and class IV: 1.7%). Mean follow‐up was 4.7 ± 1.9 months. Capture threshold and impedance for each of the 10 LV lead pacing vectors remained stable during follow‐up. LV lead dislodgement occurred in 6 (3.5%) patients and PNS was observed in 23 (13.5%) patients. PNS was resolved noninvasively in all 23 (100%) patients, either by reprogramming to pace from the additional LV lead pacing vectors alone (13 pts, 56.5%), reprogramming to pace from the additional LV lead pacing vectors and reprogramming pacing output (4 pts, 17.4%), or by reprogramming pacing output alone (6 pts, 26.1%). Conclusions : The Quartet LV lead electrical performance was stable and was associated with a high implant success and low dislodgement rate during 3‐month follow‐up. In all patients with PNS, the 10 pacing vectors combined with reduced output programming enabled the elimination of PNS noninvasively. (J Cardiovasc Electrophysiol, Vol. 24, pp. 449‐456, April 2013)