Noise Mode Response at Peak Exercise in a DDD Pacemaker |
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| Authors: | BONNIE K. SUDDUTH D. LYNN MORRIS EDWARD W. GERTZ |
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| Affiliation: | Departments of Medicine and Radiology and the Cardiovascular Research Institute, University of California, San Francisco, and the Veterans Administration Medical Center, San Francisco, California |
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| Abstract: | The noise sampling period has been recognized as a cause of apparent sensing malfunction in demand pacemakers. Physiologic signals as well as external electromagnetic interference can cause certain demand pacemakers to remain refractory and escape asynchronously at a specified rate. In this case, noise mode reversion pacing at the programmed lower rate limit of a Cordis 415A DDD pacemaker was observed during exercise when P-waves fell within the noise sampling period. |
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| Keywords: | electrical interference dual chamber pacemakers pacemaker sensing oversensing |
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