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AssigneePacesetter, Inc.
InventorsPatrick Tchou, Euljoon Park, Kerry A. Bradley
Estimating the term…
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. The system processes and displays the measured activity or minute ventilation data to interpolate diagnostic relationships between activity, minute ventilation, heart rate, or sensor-indicated pacing rate, that are representative of the overall well-being of the patient, thus reflective of the severity of CHF symptoms. Activity and minute ventilation data collected upon each heart rate or sensor-indicated pacing rate change are stored in histogram bins assigned to defined heart rate or sensor-indicated pacing rate ranges. After a predetermined period of data collection, the data for each rate range is averaged and statistical or mathematical analysis is performed to determine correlation or regression coefficients that define the relationships between activity, heart rate, sensor-indicated pacing rate, or minute ventilation. A graphical display of the stored averages and the relationship coefficients may be provided for analysis.
A system for automatically monitoring the progression of a patient's cardiac condition, comprising:
A system for automatically monitoring the progression of a patient's cardiac condition, comprising:
A system for use with a stimulation device to automatically monitor the progression of a patient's cardiac condition, comprising:
A system for automatically monitoring the progression of a patient's cardiac condition, comprising:
A method for automatically monitoring the progression of a patient's cardiac condition, comprising:
A system for automatically monitoring the progression of a patient's cardiac condition, comprising:
Dependencies are inferred from the claim text.