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Effect of Modern Pacing Algorithms on Generator Longevity:
Author(s) -
GELVAN DAN,
CRYSTAL EUGENE,
DOKUMACI BARBAROS,
GOLDSHMID YUVAL,
OVSYSHCHER I. ELI
Publication year - 2003
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 - 10.1046/j.1460-9592.2003.t01-1-00272.x
Subject(s) - medicine , longevity , generator (circuit theory) , algorithm , cardiology , gerontology , power (physics) , computer science , physics , quantum mechanics
Pulse generator (PG) longevity is of major importance to the quality of care of pacemaker patients. A series of automatic algorithms affect PG longevity. This study investigated the individual and combined effects of three algorithms incorporated in the Medtronic Kappa 700 pacemaker series: Capture Management periodically measures the stimulation threshold and adjusts the PG output, Sinus Preference allows the sinus rate to prevail in a specified range below the sensor rate, and Search AV allows an extension of the AV interval if spontaneous conduction is observed. The effects of Capture Management, Sinus Preference, and Search AV on device longevity were studied in 21 consecutive patients treated in the VDD and DDDR modes. Patients were followed for 1 year. The data were analyzed using an equation provided by the manufacturer. Capture Management was activated in 20 patients. For 11 PGs at the basic settings, longevity was extended by 5.2%, whereas reprogrammed PGs had no gain. Sinus Preference was active in four DDDR patients, who gained12.0 ± 5.3%atrial sensing from it, with a resultant longevity gain of1.4 ± 0.45 months(NS). Search AV was active in 19 patients and 8 responders gained7.8 ± 4.4 monthsPG longevity. The overall longevity in this study was106.3 ± 8.4 monthswith all features as programmed, whereas the longevity without Capture Management and Search AV algorithms would be98.2 ± 4.9 months, saving8.1 ± 5.8 months(range 0–18) of battery life. Thus, two algorithms: Capture Management and Search AV, have clinical relevance in the extension of PG longevity. (PACE 2003; 26:1796–1802)