Recurrence of atrial tachyarrhythmias in implantable cardioverter- defibrillator recipients

Dawood Darbar, Eduardo N. Warman, Stephen C. Hammill, Paul Andrew Friedman

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Background: Because the natural history of atrial tachyarrhythmia (AT) is not known in patients with implantable cardioverter-defibrillators (ICDs) but without device-based atrial therapies, we aimed to describe the characteristics and recurrence of AT in such patients. Methods: In this multicenter trial, 269 patients with standard indications for ICD placement and 2 episodes of AT in the preceding year received a dual-chamber ICD capable of logging AT. Patients were randomly assigned to 3-month periods of atrial therapies "on" or "off." This analysis considered only the 118 patients with atrial therapies programmed off at ICD placement. Results: Fifty-eight patients (49%) had at least 1 AT episode longer than 1 minute, and 21 (18%) had at least 1 prolonged episode (>24 hours). The median episode frequency for each patient (episodes per month) was 1.8 episodes longer than 1 minute, 0.8 longer than 1 hour, and 0 longer than 24 hours. The median AT burden was 12.2 hours per month. Conclusions: Patients with standard ICD indications and history of AT have infrequent episodes, frequent short episodes, or prolonged episodes of AT-atrial fibrillation. However, the clinical characteristics examined did not distinguish among the groups. Improved diagnostic tools may help identify patients at risk for development of AT, thereby allowing specific therapies to be targeted to each group of patients.

Original languageEnglish (US)
Pages (from-to)1047-1051
Number of pages5
JournalPACE - Pacing and Clinical Electrophysiology
Volume28
Issue number10
DOIs
StatePublished - Oct 2005

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Implantable Defibrillators
Tachycardia
Recurrence
Therapeutics
Atrial Fibrillation
Multicenter Studies
Equipment and Supplies

Keywords

  • Atrial arrhythmia
  • Implantable cardioverter-defibrillator
  • Therapy

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

Recurrence of atrial tachyarrhythmias in implantable cardioverter- defibrillator recipients. / Darbar, Dawood; Warman, Eduardo N.; Hammill, Stephen C.; Friedman, Paul Andrew.

In: PACE - Pacing and Clinical Electrophysiology, Vol. 28, No. 10, 10.2005, p. 1047-1051.

Research output: Contribution to journalArticle

Darbar, Dawood ; Warman, Eduardo N. ; Hammill, Stephen C. ; Friedman, Paul Andrew. / Recurrence of atrial tachyarrhythmias in implantable cardioverter- defibrillator recipients. In: PACE - Pacing and Clinical Electrophysiology. 2005 ; Vol. 28, No. 10. pp. 1047-1051.
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