Update on small-diameter implantable cardioverter-defibrillator leads performance

Pacing and Clinical Electrophysiology : PACE
Johannes B van ReesMartin J Schalij

Abstract

The performance of small diameter implantable cardioverter defibrillator (ICD) leads is questionable. However, data on performance during long-term follow-up are scarce. The aim of this study is to provide an update for the lead failure and cardiac perforation rate of Medtronic's Sprint Fidelis ICD lead (Medtronic Inc., Minneapolis, MN, USA) and St. Jude Medical's Riata ICD lead (St. Jude Medical Inc., St. Paul, MN, USA). Since 1996, all ICD system implantations at the Leiden University Medical Center, the Netherlands, are registered. For this study, data up to February 2011 on 396 Sprint Fidelis leads (follow-up 3.4 ± 1.5 years), 165 8-French (F) Riata leads (follow-up 4.6 ± 2.6 years), and 30 7-F Riata leads (follow-up 2.9 ± 1.3 years) were compared with a benchmark cohort of 1,602 ICD leads (follow-up 3.4 ± 2.7 years) and assessed for the occurrence of lead failure and cardiac perforation. During follow-up, the yearly lead failure rate of the Sprint Fidelis lead, 7-F Riata lead, 8-F Riata lead, and the benchmark cohort was 3.54%, 2.28%, 0.78%, and 1.14%, respectively. In comparison to the benchmark cohort, the adjusted hazard ratio of lead failure was 3.7 (95% confidence interval [CI] 2.4-5.7, P < 0.001) for the Sprint Fidel...Continue Reading

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