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Europace Advance Access originally published online on January 9, 2006
Europace 2006 8(2):96-101; doi:10.1093/europace/euj024
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© The European Society of Cardiology 2006. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

NOT PACING THE RIGHT VENTRICLE

Use of a new cardiac pacing mode designed to eliminate unnecessary ventricular pacing

Gerd Fröhlig1,*, Daniel Gras2, Jacques Victor3, Philippe Mabo4, Daniel Galley5, Arnaud Savouré6, Gaël Jauvert7, Pascal Defaye8, Pascale Ducloux9 and Amel Amblard9

Medizinische Universitatsklinik IIIUniversitätskliniken des Saarlandes Innere Medizin III, 66421 Homburg Germany ; Nouvelles Cliniques Nantaises Nantes France ; CHU d'Angers France ; CHU de Rennes France ; CHG d'Albi France ; CHU de Rouen France ; Clinique BIZET Paris France ; CHU de Grenoble France ; ELA Medical Le Plessis-Robinson France

Aims To examine the performance of AAIsafeR2, a new pacing mode to minimize the cumulative proportion of ventricular pacing in patients who do not need regular ventricular support.

Methods and results The safety of AAIsafeR2 was examined in 123 recipients (73±12 years old, 51% men) of dual chamber pacemakers implanted for sinus node dysfunction, paroxysmal AV block or the bradycardia-tachycardia syndrome. Data were collected from pacemaker diagnostics, and the first 43 patients underwent 24-h Holter recordings before being discharged from the hospital with AAIsafeR2 activated. No adverse event related to AAIsafeR2 was observed. All ventricular pauses detected on Holter tapes triggered immediate back-up ventricular pacing. Appropriate switches to DDD occurred in 97 of 123 patients. In 69 of 123 devices (56%) switches to DDD were non-sustained, and the average % ventricular pacing in this group was 0.2±0.5%.

Conclusion AAIsafeR2 mode seems to be safe and reliable in patients with infrequent slowing or pauses in ventricular activity, while maintaining ventricular pacing below 1%.

Key Words: Sinus node dysfunction, Dual chamber pacing, Atrioventricular conduction, Atrial pacing, Ventricular pacing

Corresponding author. Tel: +49 6841 1623300; fax: +49 6841 1623269. E-mail address: ingfro{at}uniklinikum-saarland.de


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