Rate adaptive cardiac pacing systems and methods
First Claim
1. A method for providing rate-adaptive cardiac pacing therapy from an implantable medical device, the method comprising:
- sensing a pulmonary function of a patient;
determining a rate of change in the pulmonary function;
sensing a cardiac function of the patient;
determining a rate of change in the cardiac function; and
calculating a target pacing rate based on an existing pacing rate, the rate of change in the pulmonary function, and the rate of change in the cardiac function, wherein calculating the target pacing rate comprises making the target pacing rate less than the existing pacing rate at all times when the pulmonary function is increasing with time and the cardiac function is decreasing with time.
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Abstract
The invention relates to cardiac rhythm management systems, and more particularly, to rate adaptive cardiac pacing systems and methods. In an embodiment, the invention includes a method for providing rate-adaptive cardiac pacing therapy from an implantable medical device, the method including sensing a pulmonary function of a patient; determining a rate of change in the pulmonary function; sensing a cardiac function of the patient; determining a rate of change in the cardiac function; and calculating a target pacing rate based on an existing pacing rate, the rate of change in the pulmonary function, and the rate of change in the cardiac function.
134 Citations
14 Claims
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1. A method for providing rate-adaptive cardiac pacing therapy from an implantable medical device, the method comprising:
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sensing a pulmonary function of a patient; determining a rate of change in the pulmonary function; sensing a cardiac function of the patient; determining a rate of change in the cardiac function; and calculating a target pacing rate based on an existing pacing rate, the rate of change in the pulmonary function, and the rate of change in the cardiac function, wherein calculating the target pacing rate comprises making the target pacing rate less than the existing pacing rate at all times when the pulmonary function is increasing with time and the cardiac function is decreasing with time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification