Initial clinical experience with a rate responsive pacemaker.
Prism-CLR is a new single chamber unipolar pace, bipolar or unipolar sense, rate responsive pacemaker that utilizes a closed-loop system based on the analysis of the evoked potential for rate adjustment. It also has an automatic output regulation feature for capture verification and threshold search. Five patients in whom this pacemaker was implanted exhibited an appropriate rate increase with exercise and psychological stress. Automatic output regulation functioned appropriately in three of five patients. Preliminary data suggest that Prism-ClR is an effective pacemaker for patients who may benefit from rate responsive pacing. The automatic output regulation recognition algorithm may need modification in some patients.
Singer
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Cardiovascular Division, University of Louisville, School of Medicine, Kentucky 40202.
Olash
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Brennan
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Kupersmith
J
J
D000368:Aged; D000465:Algorithms; D003327:Coronary Disease / Q000628:therapy; D004867:Equipment Design; D015444:Exercise; D005260:Female; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D010138:Pacemaker, Artificial; D012804:Sick Sinus Syndrome / Q000628:therapy; D013315:Stress, Psychological / Q000503:physiopathology