Extraction of chronically implanted coronary sinus leads active fixation vs passive fixation leads

Heart Rhythm. 2016 Jun;13(6):1253-9. doi: 10.1016/j.hrthm.2016.01.031. Epub 2016 Jan 29.

Abstract

Background: The Medtronic model 4195 (StarFix) left ventricular lead is an active fixation lead that provides additional support within the coronary sinus (CS) via deployable lobes. While this lead has been shown to have excellent stability within the CS, concerns about its extractability have been raised.

Objective: The aim of this study was to compare the safety and efficacy of the extraction of the model 4195 lead vs other Medtronic CS leads in a prospective cohort study.

Methods: Patients undergoing extraction of this and other CS leads for standard indications were prospectively enrolled and studied. The primary outcomes of interest were the removal success rates and associated complication rates. Patients were followed for a month postprocedure.

Results: The overall left ventricular lead extraction success rate was 97.6% (n = 205). Among 40 patients with chronic model 4195 leads, there were 37 successful extractions (92.5%) as compared to 98.8% for the 165 non-4195 leads. However, in 2 of the 3 StarFix lead extraction failures, standard extraction techniques were not used. All 10 of the model 4195 leads that had been implanted for less than 6 months were extracted without incident.

Conclusion: In this largest study of CS lead extractions published to date, the overall success rate of the extraction of chronically implanted CS leads is high and the complication rate is similar in these lead models. The extraction of the model 4195 lead is clearly more challenging, but it can be accomplished in high-volume extraction centers with experienced operators. It is recommended that the model 4195 lead be extracted by experienced operators.

Keywords: Cardiac resynchronization therapy; LV leads; Lead extraction.

MeSH terms

  • Aged
  • Cardiac Resynchronization Therapy Devices / classification*
  • Cohort Studies
  • Coronary Sinus / surgery
  • Device Removal* / adverse effects
  • Device Removal* / methods
  • Equipment Design
  • Female
  • Humans
  • Intraoperative Complications* / epidemiology
  • Intraoperative Complications* / etiology
  • Male
  • Middle Aged
  • Outcome and Process Assessment, Health Care
  • Pacemaker, Artificial / classification*
  • Prospective Studies