Rate responsive cardiac pacing control using posture
First Claim
1. A method for controlling a pacing rate for a rate responsive implantable pacemaker, the method comprising:
- sensing an activity signal correlated to a metabolic demand of a patient;
determining a sensor indicated pacing rate (SIR) based on the activity signal;
sensing a posture signal correlated to a physical body posture of the patient;
comparing the posture signal to one or more verification criteria correlated to an exercising posture of the patient; and
withholding an adjustment of the pacing rate to be the SIR in response to the one or more verification criteria not being met.
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Accused Products
Abstract
An implantable rate responsive pacemaker includes a sensor module configured to produce an activity signal correlated to a metabolic demand of a patient and a posture signal correlated to patient posture. The pacemaker further includes a pulse generator configured to generate and deliver pacing pulses to a patient'"'"'s heart via a pair of electrodes coupled to the pacemaker. A control module is coupled to the pulse generator and the sensor module and is configured to determine a sensor indicated pacing rate from the activity signal, compare the posture signal to verification criteria for confirming an exercising posture of the patient, and withhold an adjustment of a pacing rate to the sensor indicated pacing rate responsive to the verification criteria not being met.
109 Citations
24 Claims
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1. A method for controlling a pacing rate for a rate responsive implantable pacemaker, the method comprising:
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sensing an activity signal correlated to a metabolic demand of a patient; determining a sensor indicated pacing rate (SIR) based on the activity signal; sensing a posture signal correlated to a physical body posture of the patient; comparing the posture signal to one or more verification criteria correlated to an exercising posture of the patient; and withholding an adjustment of the pacing rate to be the SIR in response to the one or more verification criteria not being met. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An implantable rate responsive pacemaker, comprising:
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a sensor module configured to produce an activity signal correlated to a metabolic demand of a patient and a posture signal correlated to patient posture; a pulse generator configured to generate and deliver pacing pulses to a patient'"'"'s heart at a pacing rate via a pair of electrodes coupled to the pacemaker; and a control module coupled to the pulse generator and the sensor module and configured to; determine a sensor indicated pacing rate (SIR) based on the activity signal; compare the posture signal to one or more verification criteria correlated to an exercising posture of the patient; and withhold an adjustment of the pacing rate to be the SIR in response to the one or more verification criteria not being met. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A non-transitory, computer readable storage medium storing a set of instructions that, when executed by a control module of an implantable pacemaker, cause the pacemaker to:
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determine a sensor indicated pacing rate (SIR) based on an activity signal correlated to a metabolic demand of a patient received by the control module from a sensor module; compare a posture signal received by the control module from the sensor module to one or more posture verification criteria correlated to an exercising posture of the patient; and withhold an adjustment of a pacing rate to be the SIR in response to the one or more posture verification criteria not being met.
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Specification