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Europace Advance Access published online on January 9, 2006
Europace, doi:10.1093/europace/euj024
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© The European Society of Cardiology 2006. All rights reserved
Received July 11, 2005
Accepted October 1, 2005

Article

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

Gerd Fröhlig 1 *, Daniel Gras 2, Jacques Victor 3, Philippe Mabo 4, Daniel Galley 5, Arnaud Savouré 6, Gaël Jauvert 7, Pascal Defaye 8, Pascale Ducloux 9, and Amel Amblard 9

1 Medizinische Universitatsklinik III, Universitätskliniken des Saarlandes, Innere Medizin III, 66421 Homburg, Germany
2 Nouvelles Cliniques Nantaises, Nantes, France
3 CHU d'Angers, France
4 CHU de Rennes, France
5 CHG d'Albi, France
6 CHU de Rouen, France
7 Clinique BIZET, Paris, France
8 CHU de Grenoble, France
9 ELA Medical, Le Plessis-Robinson, France

* To whom correspondence should be addressed.
Gerd Fröhlig, E-mail: ingfro{at}uniklinikum-saarland.de


  Abstract

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%.

Keywords: Sinus node dysfunction; Dual chamber pacing; Atrioventricular conduction; Atrial pacing; Ventricular pacing.
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