Incidence and Rate Characteristics of Atrial Tachyarrhythmias in Patients with a Dual Chamber Defibrillator

Atrial tachyarrhythmias play an important role in the treatment of patients with malignant ventricular tachyarrhythmias not only with respect to inappropriate discharges but also to left ventricular function and stroke risk. A combined dual chamber defibrillator provides separate therapies for atria...

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Bibliographic Details
Published in:Pacing and clinical electrophysiology 2003-08, Vol.26 (8), p.1691-1698
Main Authors: WOLPERT, CHRISTIAN, JUNG, WERNER, SPEHL, SUSANNE, SCHIMPF, RAINER, OMRAN, HEYDER, SCHUMACHER, BURGHARD, ESMAILZADEH, BAHMAN, TENZER, DIRK, MEHRA, RAHUL, LÜDERITZ, BERNDT
Format: Article
Language:English
Subjects:
Algorithms
antitachycardia pacing
atrial fibrillation
Atrial Fibrillation - epidemiology
Atrial Fibrillation - physiopathology
Atrial Fibrillation - therapy
Defibrillators, Implantable
Female
Follow-Up Studies
Humans
implantable defibrillator
Incidence
Male
Middle Aged
Prospective Studies
Recurrence
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Summary:Atrial tachyarrhythmias play an important role in the treatment of patients with malignant ventricular tachyarrhythmias not only with respect to inappropriate discharges but also to left ventricular function and stroke risk. A combined dual chamber defibrillator provides separate therapies for atrial and ventricular tachyarrhythmias. To assess the incidence of atrial tachyarrhythmias in patients with this dual chamber implantable defibrillator, 40 patients with ventricular tachyarrhythmias and concomitant atrial tachyarrhythmias and/or AV conduction disturbances were included in a prospective study. During a mean follow‐up of 25 ± 11 months , 26 of 40 patients had a total of 1,430 recurrences of atrial tachyarrhythmias. The vast majority of the atrial tachyarrhythmias with regular atrial cycles had a mean median atrial cycle length of 235 ± 37 ms and a mean duration of 34 ± 144 minutes . Atrial tachyarrhythmias with irregular atrial cycles exhibited a median atrial cycle length of 198 ± 31 ms and had a mean duration of 246 ± 1,264 minutes . In addition, 67% of 375 tachyarrhythmias, in which the median ventricular cycle length during the ongoing episode could be documented, had a ventricular rate
ISSN:0147-8389
1540-8159
DOI:10.1046/j.1460-9592.2003.t01-1-00254.x