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7029270 
Journal Article 
Long-term performance of a pacing lead family: A single-center experience 
El-Chami, MF; Hoskins, MH; Delurgio, D; Lloyd, M; Langberg, J; Leon, AR; Merchant, FM; Rao, B; Shah, AD; Wood, C; Sayegh, M; Zakka, P; Ginn, K; Pallotta, L; Evans, B; , 
2019 
Yes 
Heart Rhythm
ISSN: 1547-5271
EISSN: 1556-3871 
ELSEVIER SCIENCE INC 
NEW YORK 
572-578 
30366161 
WOS:000462618400015 
BACKGROUND The performance of Abbott/St. Jude Medical (Sylmar CA) Tendril pacing leads has not been well characterized.OBJECTIVE We sought to assess the performance of Tendril leads as compared with that of different pacing leads.METHODS We retrospectively identified patients implanted with the following leads: Tendril leads 1888 TC, 2088 TC, and 1688 TC, Medtronic (Fridely, MN) 4076 CapSureFix Novus, and Boston Scientific (Natick, MA) FINELINE II Sterox Pacing EZ leads (models 4469, 4470, and 4471). The primary end point was the incidence of lead malfunction assessed by Kaplan-Meier analysis.RESULTS During the study period, 9782 leads were implanted, including 8512 Tendril leads, 731 Medtronic 4076 CapSureFix Novus leads, and 539 FINELINE II leads. A total of 540 leads (5.5%) malfunctioned during a mean follow-up of 3.6 6 2.9 years. Lead malfunction manifested predominantly as noise and/or low impedance (95%). Lead malfunction rates were significantly higher at 5 years for Tendril vs non-Tendril leads (7.0% vs 2.1%; P <.001). The highest rate of failure at 5 years was seen in the Tendril 1888 TC leads (9.9%), followed by Tendril 1688 (5.7%) and Tendril 2088 (5.2%) leads. In contrast, malfunction rates were significantly lower for the Medtronic 4076 (2.6%) and FINELINE II (1.7%) leads. During follow-up to 10 years, the incidence of lead malfunction for Optim-insulated Tendril leads (models 1888 TC and 2088 TC) was significantly higher than that for the non-Optim- insulated Tendril 1688 TC lead (24.5% vs 7.1%) (P = .008).CONCLUSION Tendril leads appear to have a higher rate of malfunction than do comparator leads. Optim insulation may partly explain the higher failure rate.