Utility of rate histograms in programming and follow-up of a DDDR pacemaker.
Dual-chamber, rate-modulated pacing (DDDR) is the newest available pacing mode. To optimize programming of the rate response options for such a pacemaker, the physician must adopt an organized follow-up method, including use of some type of exercise testing to assess the programmed options of the pacemaker. Because the patient may achieve a substantial "training effect" after a rate-modulated pacing device has been implanted, the device probably should be reprogrammed at 1 month or after implantation. Programming and follow-up can be considerably facilitated by the use of pacemaker-generated "rate histograms," which conveniently display the distribution of rate responses to various levels of activity.
Hayes
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Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN 55905.
Higano
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Eisinger
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D000328:Adult; D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic / Q000295:instrumentation; D010138:Pacemaker, Artificial; D005082:Physical Exertion