Survival After Secondary Prevention Implantable Cardioverter-Defibrillator Placement: An Analysis From the NCDR ICD Registry.

Journal Article (Journal Article)

OBJECTIVES: This study sought to define the characteristics and risks of death of patients receiving a physician-designated secondary prevention implantable cardioverter-defibrillator (ICD) in contemporary clinical practice. BACKGROUND: Data on utilization and outcomes of ICDs for the secondary prevention of sudden cardiac death (SCD) are limited. METHODS: Patients enrolled in the National Cardiovascular Data Registry's (NCDR) ICD Registry from 2006 to 2009 with a physician-designated secondary prevention indication for ICD implantation were identified and linked to the Social Security Death Master File. Those patients with a history either of tachycardic arrest or sustained ventricular tachycardia (SCD/VT) or of syncope without SCD/VT were included. Kaplan-Meier survival analysis was used to assess mortality. Cox proportional hazards survival modeling was used to assess the risk of death in these groups, adjusting for patient characteristics. RESULTS: In the study cohort of 46,685 patients (mean age 66 ± 14 years, 73.5% male, 85% white), 78% had SCD/VT and 22% had syncope. Overall mortality was 10.4% at 1 year and 16.4% at 2 years. Compared with patients having SCD/VT, the adjusted hazard of death at 1 year was lower in the patients having syncope (hazard ratio: 0.89; 95% confidence interval: 0.83 to 0.96) but was not significantly different by 2 years (hazard ratio: 0.96; 95% confidence interval: 0.90 to 1.01). CONCLUSIONS: Nearly 9 of 10 patients receiving a secondary prevention ICD in clinical practice are alive 1 year after implantation. The risk of death varies by indication and is highest among patients who survive SCD or sustained VT in the first year after device implantation.

Full Text

Duke Authors

Cited Authors

  • Katz, DF; Peterson, P; Borne, RT; Betz, J; Al-Khatib, SM; Varosy, PD; Wang, Y; Hsu, JC; Hoffmayer, KS; Kipp, RT; Hansen, CM; Turakhia, MP; Masoudi, FA

Published Date

  • January 2017

Published In

Volume / Issue

  • 3 / 1

Start / End Page

  • 20 - 28

PubMed ID

  • 29759690

Electronic International Standard Serial Number (EISSN)

  • 2405-5018

Digital Object Identifier (DOI)

  • 10.1016/j.jacep.2016.06.001


  • eng

Conference Location

  • United States