Capture threshold monitoring
AssigneeMedtronic, Inc.
InventorBozidar Ferek-Petric
Life of this patent
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Abstract
In general, the invention is directed to techniques for capture testing of a capture threshold in cooperation with measurement of other cardiac parameters. Physiological or non-physiological parameters may indicate a possible change in the capture threshold, and a significant change in a cardiac parameter may trigger more frequent monitoring of the capture threshold. In addition, measurement of cardiac parameters in relation to measurement of the capture threshold may be useful in diagnosing problems and forecasting possible loss of capture.
Claims34
A method comprising:
- automatically performing a cardiac capture test at a first capture test frequency;
- detecting a substantial change in at least one cardiac parameter;
- and
- automatically performing the capture test at a second capture test frequency greater than the first capture test frequency in response to the detection of the substantial change,
- wherein the cardiac parameter comprises one of a performance of an implantable medical device and a physiologic condition of a patient other than the capture threshold.
A method comprising:
- performing a capture test to measure a capture threshold;
- measuring a cardiac parameter substantially contemporaneously with the performance of the capture test;
- and
- recording data representing the capture threshold in relation to the measurement of the cardiac parameter.
A computer-readable medium comprising instructions for causing a programmable processor to:
- automatically perform a cardiac capture test at a first capture test frequency;
- detect a substantial change in at least one cardiac parameter;
- and
- automatically perform the capture test at a second capture test frequency greater than the first capture test frequency in response to the detection of the substantial change,
- wherein the cardiac parameter comprises one of a performance of an implantable medical device and a physiologic condition of a patient other than the capture threshold.
A computer-readable medium comprising instructions for causing a programmable processor to:
- perform a capture test to measure a capture threshold;
- measure a cardiac parameter substantially contemporaneously with the performance of the capture test;
- and
- record data representing the capture threshold in relation to the measurement of the cardiac parameter.
A device comprising:
- a sensor to detect a cardiac parameter comprising one of a performance of an implantable medical device and a physiologic condition of a patient other than a capture threshold;
- and
- a processor to automatically perform a capture test at a first capture test frequency and to automatically perform the capture test at a second capture test frequency greater than the first capture test frequency upon detection of a substantial change in the cardiac parameter.
A device comprising:
- a sensor to detect a cardiac parameter comprising one of a performance of an implantable medical device and a physiologic condition of a patient other than a capture threshold;
- and
- a processor to perform a capture test to measure a capture threshold and to record data representing the capture threshold in relation to a measurement of the cardiac parameter.
Dependencies are inferred from the claim text.