Cardiac rhythm pacing rate selection for automatic capture threshold testing
First Claim
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1. A cardiac rhythm management system, comprising:
- a sensing system configured to sense cardiac signals;
a pacing device operable at least at a sensor-indicated pacing rate and a non-sensor-indicated pacing rate; and
a processor coupled to the sensing system and the pacing device, the processor configured to operate the pacing device in a current pacing mode before a capture threshold test and determine a sensor-indicated pacing rate corresponding to the patient'"'"'s sensed hemodynamic need, the processor configured to select either the sensor-indicated pacing rate or the non-sensor-indicated pacing rate as a test pacing rate, switch operation of the pacing device from the current pacing mode to the capture threshold test, and perform the capture threshold test using the test pacing rate.
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Abstract
Cardiac devices and methods that select pacing rates for automatic threshold tests based on a patient'"'"'s hemodynamic need. A sensor-indicated pacing rate corresponding to a patient'"'"'s hemodynamic need is determined. A test pacing rate is selected from either the sensor-indicated rate or another rate. Capture threshold testing is performed using the selected pacing rate.
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Citations
20 Claims
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1. A cardiac rhythm management system, comprising:
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a sensing system configured to sense cardiac signals; a pacing device operable at least at a sensor-indicated pacing rate and a non-sensor-indicated pacing rate; and a processor coupled to the sensing system and the pacing device, the processor configured to operate the pacing device in a current pacing mode before a capture threshold test and determine a sensor-indicated pacing rate corresponding to the patient'"'"'s sensed hemodynamic need, the processor configured to select either the sensor-indicated pacing rate or the non-sensor-indicated pacing rate as a test pacing rate, switch operation of the pacing device from the current pacing mode to the capture threshold test, and perform the capture threshold test using the test pacing rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A cardiac rhythm management system operable for performing a capture threshold test, comprising:
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a sensing system configured to sense cardiac signals; a pacing device configured to provide cardiac pacing at least at a sensor-indicated pacing rate, a predetermined rate, and a pacing rate determined based on a heart rate of a patient before the capture threshold test; and a processor coupled to the sensing system and the pacing device, the processor configured to operate the pacing device in a current pacing mode before the capture threshold test and determine a sensor-indicated pacing rate corresponding to the patient'"'"'s sensed hemodynamic need, the processor configured to; select, as a test pacing rate, one of the sensor-indicated pacing rate and the predetermined pacing rate if the current pacing mode comprises a tracking mode; select, as the test pacing rate, one of the sensor-indicated pacing rate and the pacing rate determined based on the patient'"'"'s heart rate before performance of the capture threshold test if the current pacing mode comprises a non-tracking mode; switch operation of the pacing device from the current pacing mode to the capture threshold test; and perform the capture threshold test using the test pacing rate. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A cardiac rhythm management (CRM) system, comprising:
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means for operating the CRM system at least at a sensor-indicated pacing rate and a non-sensor-indicated pacing rate; means for operating the CRM system in a current pacing mode before a capture threshold test is performed; means for determining a sensor-indicated pacing rate corresponding to a patient'"'"'s sensed hemodynamic need; means for selecting a test pacing rate from one of the sensor-indicated pacing rate and a non-sensor-indicated pacing rate; means for switching operation of the CRM system from the current pacing mode to the capture threshold test; and means for performing the capture threshold test using the test pacing rate. - View Dependent Claims (20)
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Specification