System and method for monitoring progression of cardiac disease state using physiologic sensors
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United States of America Patent
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Jun 3, 2003
Grant Date -
Nov 1, 2001
app pub date -
Dec 21, 2000
filing date -
May 9, 2000
priority date (Note) -
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Abstract
A system and corresponding method are provided to monitor physiological parameters associated with the progression, stabilization, or regression of symptoms of heart disease such as congestive heart failure (CHF). The monitoring is implemented by ongoing surrogate measurement of standard and direct measurements, such as daily activity and respiratory and cardiac rate response, utilizing existing implantable, rate-responsive stimulation devices that incorporate activity, respiration, and/or other sensors. The system includes a sensor that measures activity and/or minute ventilation when triggered by changes in the sensed intrinsic heart rate and/or changes in a sensor-indicated pacing rate.
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