Premature failure of a riata defibrillator lead without impedance change or inappropriate sensing: A case report and review of the literature

Angela Krebsbach, Fawaz Alhumaid, Charles A. Henrikson, Hugh Calkins, Ronald D Berger, Alan Cheng

Research output: Contribution to journalArticle


Premature Failure of a Riata Defibrillator Lead. A 63-year-old woman with a St. Jude Medical Riata 1570 right ventricular lead complained of intermittent hiccups 2 months after implant. Interrogation revealed elevated pacing threshold and diaphragmatic stimulation. Pacing and shock lead impedances remained stable. No inappropriate sensing was noted. Fluoroscopic examination of the lead revealed a thin radio-opaque wire seen between the 2 defibrillator coils away from the main body of the lead. After extraction, a tear in the insulation of the lead was noted allowing the inner wire to protrude. This case illustrates a novel mechanism of insulation failure without inappropriate sensing or impedance change.

Original languageEnglish (US)
Pages (from-to)1070-1072
Number of pages3
JournalJournal of Cardiovascular Electrophysiology
Issue number9
StatePublished - Sep 2011



  • biventricular pacing
  • ICD
  • lead failure
  • riata lead

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)

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