Combination of feedback on mechanical and electrical resynchronization to select therapy parameters
First Claim
1. A method for selecting a pacing therapy site, comprising:
- sensing baseline mechanical heart activity and baseline electrical heart activity;
storing the baseline mechanical heart activity and baseline electrical heart activity;
sensing mechanical heart activity and electrical heart activity during pacing at each of a plurality of pacing sites along a heart chamber;
storing the mechanical heart activity and electrical heart activity;
determining a change from the baseline mechanical heart activity to the sensed mechanical activity for each of the plurality of pacing sites along the heart chamber;
determining a change from the baseline electrical activity to the sensed electrical heart activity for each of the plurality of pacing sites along the heart chamber;
sorting the plurality of pacing sites in a first order based upon the changes in mechanical heart activity;
sorting the plurality of pacing sites in a second order based upon the changes in electrical heart activity; and
selecting a pacing site from the plurality of pacing sites as a common pacing site between the first order and the second order.
1 Assignment
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Accused Products
Abstract
A system and method select a pacing site for a cardiac pacing therapy. A change from a baseline mechanical activity is extracted from a signal of mechanical heart activity during pacing at each one of multiple pacing sites along a heart chamber. A change from a baseline electrical activity is extracted from a signal of electrical heart activity during pacing at each of the of pacing sites. The pacing sites are sorted in a first order based upon the changes in mechanical heart activity and in a second order based upon the changes in electrical heart activity. A pacing site is selected from the multiple pacing sites as a common pacing site between the first order and the second order.
66 Citations
22 Claims
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1. A method for selecting a pacing therapy site, comprising:
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sensing baseline mechanical heart activity and baseline electrical heart activity; storing the baseline mechanical heart activity and baseline electrical heart activity; sensing mechanical heart activity and electrical heart activity during pacing at each of a plurality of pacing sites along a heart chamber; storing the mechanical heart activity and electrical heart activity; determining a change from the baseline mechanical heart activity to the sensed mechanical activity for each of the plurality of pacing sites along the heart chamber; determining a change from the baseline electrical activity to the sensed electrical heart activity for each of the plurality of pacing sites along the heart chamber; sorting the plurality of pacing sites in a first order based upon the changes in mechanical heart activity; sorting the plurality of pacing sites in a second order based upon the changes in electrical heart activity; and selecting a pacing site from the plurality of pacing sites as a common pacing site between the first order and the second order. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical device system for selecting a pacing therapy site, comprising:
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a plurality of electrodes configured to produce a signal of electrical heart activity and for delivering cardiac pacing pulses to a plurality of pacing sites along a heart chamber; a sensor for producing a signal of mechanical heart activity; a processor means for determining baseline mechanical heart activity from the sensor signal and baseline electrical heart activity from the signal of electrical heart activity, determining from the signal of mechanical heart activity a change from the baseline mechanical heart activity during pacing at each of the plurality of pacing sites and for determining from the signal of electrical heart activity a change from the baseline electrical activity during pacing at each of the plurality of pacing sites; a processor sorting means for sorting the plurality of pacing sites in a first order based upon the changes in mechanical heart activity and in a second order based upon the changes in electrical heart activity; and a processor selecting means for selecting a pacing site from the plurality of pacing sites as a common pacing site between the first order and the second order. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A non-transitory, computer-readable storage medium comprising instructions that, when executed, cause a processor included in a medical device system to:
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sense baseline mechanical heart activity and baseline electrical heart activity; store the baseline mechanical heart activity and baseline electrical heart activity; sense mechanical heart activity and electrical heart activity during pacing at each of a plurality of pacing sites along a heart chamber; store the mechanical heart activity and electrical heart activity; determine a change from the baseline mechanical heart activity to the sensed mechanical heart activity for each of the plurality of pacing sites along the heart chamber; determine a change from the baseline electrical activity to the sensed electrical heart activity during pacing at each of the plurality of pacing sites in the heart chamber; sort the plurality of pacing sites in a first order based upon changes in mechanical heart activity and in a second order based upon changes in electrical heart activity; and select a pacing site from the plurality of pacing sites as a common pacing site between the first order and the second order.
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22. An apparatus for selecting a pacing therapy site, comprising:
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processing means for determining from a signal of mechanical heart activity a change from a previously determined baseline mechanical activity during pacing at each of a plurality of pacing sites along a heart chamber; processing means for determining from a signal of electrical heart activity a change from a previously determined baseline electrical activity during pacing at each of the plurality of pacing sites along the heart chamber; sorting means for sorting the plurality of pacing sites in a first order based upon the changes in mechanical heart activity; sorting means for sorting the plurality of pacing sites in a second order based upon the changes in electrical heart activity; and processing means selecting a pacing site from the plurality of pacing sites as a common pacing site between the first order and the second order.
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Specification