Document Detail

Postoperative Performance of the Quartet(®) Left Ventricular Heart Lead.
MedLine Citation:
PMID:  23339555     Owner:  NLM     Status:  Publisher    
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. pp. 1-8).
Gery Tomassoni; James Baker; Raffaele Corbisiero; Charles Love; David Martin; Imran Niazi; Robert Sheppard; Seth Worley; Scott Beau; G Stephen Greer; Arash Aryana; Michael Cao; Nicole Harbert; Suhong Zhang;
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-22
Journal Detail:
Title:  Journal of cardiovascular electrophysiology     Volume:  -     ISSN:  1540-8167     ISO Abbreviation:  J. Cardiovasc. Electrophysiol.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-23     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9010756     Medline TA:  J Cardiovasc Electrophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013 Wiley Periodicals, Inc.
Lexington Cardiology Consultants, Lexington, Kentucky, USA St. Thomas Hospital, Nashville, Tennessee, USA Deborah Heart and Lung, Browns Mills, New Jersey, USA The Ohio State University, Columbus, Ohio, USA Lahey Clinic Medical Center, Burlington, Massachusetts, USA Aurora Cardiovascular Associates, Milwaukee, Wisconsin, USA The Heart and Vascular Institute of Florida, St. Petersburg, Florida, USA Lancaster Heart Foundation, Lancaster, Pennsylvania, USA Arkansas Heart Hospital Clinic, Little Rock, Arkansas, USA Arkansas Cardiology, Little Rock, Arkansas, USA Regional Cardiology Associates, Sacramento, California, USA University of Southern California, Los Angeles, California, USA St. Jude Medical, Sylmar, California, USA.
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