Orthostatic cardiac output response pacer for heart failure patients and diabetic patients
First Claim
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1. A method of controlling a cardiac pacing rate, said method comprising:
- detecting a change in position;
upon detecting a change in position, initiate adjusting the cardiac pacing rate, wherein an adjustment of the cardiac pacing rate is characterized by a rate of change as a function of time;
measuring cardiac output after the detecting a change in position; and
based at least in part on the measuring cardiac output, deciding whether to adjust the rate of change of the cardiac pacing rate.
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Abstract
An exemplary method includes detecting a change in position, measuring cardiac output after the detecting a change in position and, based at least in part on the measuring cardiac output, deciding whether to increase a cardiac pacing rate. An exemplary method may rely on activity in lieu of or in addition to position to decide whether to increase a cardiac pacing rate. Various exemplary methods aim to compensate for orthostatic effects such as those associated with dysautonomia. Various other exemplary methods are disclosed along with various exemplary devices, systems, etc.
86 Citations
16 Claims
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1. A method of controlling a cardiac pacing rate, said method comprising:
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detecting a change in position; upon detecting a change in position, initiate adjusting the cardiac pacing rate, wherein an adjustment of the cardiac pacing rate is characterized by a rate of change as a function of time; measuring cardiac output after the detecting a change in position; and based at least in part on the measuring cardiac output, deciding whether to adjust the rate of change of the cardiac pacing rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of controlling a cardiac pacing rate, said method comprising:
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detecting a change in activity; upon detecting a change in activity, initiate adjusting the cardiac pacing rate, wherein an adjustment of the cardiac pacing rate is characterized by a rate of change as a function of time; measuring cardiac output after the detecting a change in activity; and based at least in part on the measuring cardiac output, deciding whether to adjust the rate of change of the cardiac pacing rate. - View Dependent Claims (12, 13)
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14. An implantable pacing apparatus comprising:
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a sensor operative to detect movement of a patient; a pacing circuit to deliver pacing stimuli to the patient at a cardiac pacing rate; a sensing circuit to acquire information related to cardiac output; and control logic to initiate adjusting the cardiac pacing rate upon movement of the patient, wherein an adjustment of the cardiac pacing rate is characterized by a rate of change as a function of time, and to determine cardiac output upon movement of the patient, and to decide whether to adjust the rate of change of the cardiac pacing rate based on the determined cardiac output. - View Dependent Claims (15, 16)
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Specification