Clinical performances of a new mode switch function based on a statistical analysis of the atrial rhythm

Géroux, L.; Limousin, Maxime; Cazeau, Serge

doi:10.1007/s003990050104

Cited by 8 publications

(18 citation statements)

References 7 publications

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“…The sensitivity and specificity of the AMS function of the Chorum and Talent were recently reported in 194 patients. 19 All patients underwent 24-hour ECG recording with simultaneous activation of the event recording counters. Based on the documented atrial tachyarrhythmias on the Holter in 23 patients, AMS exhibited a sensitivity of 96%.…”

Section: Clinical Resultsmentioning

confidence: 99%

“…AMS function in the Chorum and Talent DR pacemakers (ELA Medical, Montrouge, France) combines an initial UR switch at the onset of atrial tachyarrhythmias, followed by AMS based on the detection of a sustained atrial rate above a preset atrial tachyarrhythmias detection rate. 18,19 The atrial tachyarrhythmia detection interval is termed the "diagnosis of atrial rhythm acceleration period." This varies from 62.5% (for sinus rate # 80 beats/min) to 75% of the preceding PP interval (for sinus rate .…”

Section: Ela Medical Algorithmsmentioning

confidence: 99%

See 1 more Smart Citation

Automatic Mode Switching of Implantable Pacemakers: II. Clinical Performance of Current Algorithms and Their Programming

Lau

Leung

Tse

et al. 2002

Pacing Clinical Electrophis

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While the hemodynamic and clinical significance of automatic mode switching (AMS) in patients with pacemakers has been demonstrated, the clinical behavior of AMS algorithms differ widely according to the manufacturers and pacemaker models. In general, a "rate-cutoff" detection method of atrial tachyarrhythmias provides a rapid AMS onset and resynchronization to sinus rhythm at the termination of atrial tachyarrhythmias, but may cause intermittent oscillations between the atrial tracking and AMS mode. This can be minimized with a "counter" of total number of high rate events before the AMS occurs. The use of a "running average" algorithm results in more stable rate control during AMS by reducing the incidence of oscillations, but at the expense of delayed AMS onset and resynchronization to sinus rhythm. Algorithms may be combined to fine tune the AMS response and to avoid rapid fluctuation in pacing rate. Appropriate programming of atrial sensitivity, and the avoidance of ventriculoatrial cross-talk are essential for optimal AMS performance.

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Section: Clinical Resultsmentioning

confidence: 99%

Section: Ela Medical Algorithmsmentioning

confidence: 99%

Automatic Mode Switching of Implantable Pacemakers: II. Clinical Performance of Current Algorithms and Their Programming

Lau

Leung

Tse

et al. 2002

Pacing Clinical Electrophis

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“…Table 1. So ist der Mode-Switch für "28 aus 32" (Ela Talent [17]) langsamer, aber spezifischer als ein "4-aus-7-" (Medtronic Kappa 700 [21]) oder "5-aus-8-" (Biotronik Inos [22]) Kriterium. Hierbei wird der Zähler bei Detektion einer normalen atrialen Zykluslänge nur um 1 zurückgesetzt.…”

Section: Prinzipien Verschiedener Mode-switch-algorithmenunclassified

Mode-Switch-Algorithmen: Programmierbarkeit und Nutzen

Israel

2001

Herz

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Improved performance may be achieved by a combination of different mode-switching algorithms (e.g. one algorithm for detection of atrial fibrillation, another one for detection of atrial flutter). In addition, programmability of several algorithms (e.g. mean atrial rate, beat-to-beat, x out of y) within the same device and atrial cycle-dependent sensitivity adjustment similar to automatic gain control in implantable defibrillators may further increase the clinical use of automatic mode switching.

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“…There are potential compromises between sensitivity and specificity with these algorithms, the balance of which may determine the frequency of arrhythmia-related symptoms. Atrial-based pacing is associated with a risk of developing atrial fibrillation lower than ventricular-based pacing for patients with sinus node dysfunction [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%