Use of the Elective Replacement Indicator in Predicting Time of Automatic Implantable Cardioverter‐Defibrillator Battery Depletion

DIANA AARONS, MORTON MOWER, ENRICO VELTRI

Research output: Contribution to journalArticlepeer-review

Abstract

AARONS, D., et al.: Use of the Elective Replacement Indicator in Predicting Time of Automatic Implantable Cardioverter‐Defibrillator Battery Depletion The elective replacement indicator (ERI) of an automatic impiantable cardioverter‐defibrillator (AICD) is intended to be utilized as strict criteria for the appropriate timing of pulse generator replacement. The manufacturer's newest recommendations suggest replacement within 3 months post‐KRI attainment and this applies to both AID‐B units and the latest Ventak models currently being implanted with expectations for increased battery longevity. Twelve patients with the AID‐B model were prospectively evaluated in regard to (a) time from attainment of ERI to generator exchange and (b] total battery life with respect to the presence or absence of spontaneous discharges. In the overall group, the ERI was reached at 18.9 ± 3.9 months (mean + standard deviation). The time from ERI attainment to generator exchange due to battery depletion was 8.1 ±5.1 months, and total battery life was 27.3 ± 3.1 months. In the group with sponlaneous discharges, the duration of time (months) post‐ERI to generator exchange was 5.7 ± 2.6 but was 11.4 ± 6.1 in the others (P = 0.052); battery life was 25.7 ± 2.4 and 29.4 ± 2.7, respectively (P = 0.03). We conclude that the current ERI recommendation seems overly conservative in planning generator exchange for patients without the occurrence of spontaneous discharges and appropriate for patients with such discharges.

Original languageEnglish (US)
Pages (from-to)1724-1728
Number of pages5
JournalPacing and Clinical Electrophysiology
Volume12
Issue number11
DOIs
StatePublished - Nov 1989

Keywords

  • automatic implantable cardioverter‐defibrillator
  • elective replacement indicator

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

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