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Artificial Circus Movement Tachycardias: Incidence, Mechanisms, and Prevention
Author(s) -
BERTHOLET MICHEL,
MATERNE PIERRE,
DUBOIS CHRISTOPHE,
MARCELLE PHILIPPE,
BECKERS JACQUES,
DEMOULIN JEANCLAUDE,
FOURNY JACQUES,
KULBERTUS HENRI E.
Publication year - 1985
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1985.tb05781.x
Subject(s) - medicine , sick sinus syndrome , atrial flutter , incidence (geometry) , cardiology , atrioventricular block , atrial fibrillation , physics , optics
In a group of 45 patients treated with Medtronic 7000 and 7100 pulse generators for sick sinus syndrome or second or third degree atrioventricular block, an atrial synchronous mode of pacing was programmed in 34 cases and spontaneously occurring artificial circus movement tachycardios (ACMTs) were observed in nine. An analysis of conditions of occurrence, triggering mechanisms and patterns of ACMT, is presented. Various modalilies of prevention are discussed. They resulted in suppression of ACMT in five patients and decrease of incidence in a sixth; the three remaining subjects were managed by definitive reprogramming in the DVI mode. Our conclusion is that correct prevention of ACMT requires the use of dual chamber pulse generators with programmable atrial refractory periods. For patients in whom a unit has already been implanted, careful observation of the triggering mechanism and pattern of ACMT may help in determining the most suitable way to prevent and suppress the arrhythmia.