Method and system for delivering cardiac resynchronization therapy with variable atrio-ventricular delay
First Claim
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1. An implantable cardiac rhythm management device, comprising:
- a plurality of sense amplifiers configured to sense cardiac electrical activity;
a plurality of pulse generators configured to deliver pacing pulses; and
a controller coupled to the plurality of sense amplifiers and plurality of pulse generators, the controller configured to;
control delivery of the pacing pulses using a programmable atrio-ventricular delay (AVD) interval;
receive values of a first cardiac parameter and values of a second cardiac parameter;
determine values of the AVD interval each associated with a value of the second cardiac parameter and computed using a corresponding value of the first cardiac parameter;
determine a present value of the second cardiac parameter;
determine an optimum value of the AVD interval using the determined values of the AVD interval and the present value of the second cardiac parameter; and
set the AVD interval to the optimum value of the AVD interval.
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Abstract
A pacing system computes optimal cardiac resynchronization pacing parameters using intrinsic conduction intervals. In various embodiments, values for atrio-ventricular delay intervals are each computed as a function of an intrinsic atrio-ventricular interval and a parameter reflective of an interventricular conduction delay. Examples of the parameter reflective of the interventricular conduction delay include QRS width and interval between right and left ventricular senses.
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Citations
20 Claims
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1. An implantable cardiac rhythm management device, comprising:
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a plurality of sense amplifiers configured to sense cardiac electrical activity; a plurality of pulse generators configured to deliver pacing pulses; and a controller coupled to the plurality of sense amplifiers and plurality of pulse generators, the controller configured to; control delivery of the pacing pulses using a programmable atrio-ventricular delay (AVD) interval; receive values of a first cardiac parameter and values of a second cardiac parameter; determine values of the AVD interval each associated with a value of the second cardiac parameter and computed using a corresponding value of the first cardiac parameter; determine a present value of the second cardiac parameter; determine an optimum value of the AVD interval using the determined values of the AVD interval and the present value of the second cardiac parameter; and set the AVD interval to the optimum value of the AVD interval. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating an implantable cardiac rhythm management device, comprising:
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sensing cardiac electrical activity using the implantable cardiac rhythm management device; delivering pacing pulses from the implantable cardiac rhythm management device; controlling delivery of the pacing pulses using a programmable atrio-ventricular delay (AVD) interval; determining values of a first cardiac parameter and values of a second cardiac parameter; determining values of the AVD interval each associated with a value of the second cardiac parameter and computed using a corresponding value of the first cardiac parameter; determining a present value of the second cardiac parameter; determining an optimum value of the AVD interval using the determined values of the AVD interval and the present value of the second cardiac parameter; and setting the AVD interval to the optimum value of the AVD interval. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification