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US 8,265,754 B2Granted
Cardiac rhythm pacing rate selection for automatic capture threshold testing
AssigneeCardiac Pacemakers, Inc.
InventorsDavid William Yost, Clayton Scott Foster
Life of this patent
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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.
Claims20
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.
1 more element
A cardiac rhythm management system operable for performing a capture threshold test, comprising:
- 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.
6 more elements
A cardiac rhythm management (CRM) system, comprising:
- 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.
4 more elements
Dependencies are inferred from the claim text.