Method and system for automatic anti-tachycardia pacing
First Claim
1. A method for delivery of anti-tachycardia pacing (ATP) therapy by a cardiac rhythm management device, comprising:
- generating sense signals representing electrical activity in a heart chamber and detecting a chamber sense when a sense signal exceeds a specified intrinsic detection threshold;
delivering a burst of one or more pacing pulses in accordance with an anti-tachycardia pacing protocol;
determining if one or more pacing pulses of the burst have captured the heart chamber; and
,adjusting a timing parameter of the burst in accordance with the capture determination.
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Abstract
A method and system for delivering anti-tachycardia pacing is disclosed. A cardiac rhythm management device, such as an implantable pacemaker having anti-tachycardia pacing capability, delivers anti-tachycardia pacing therapy in accordance with an anti-tachycardia pacing protocol upon detection of a terminable arrhythmia. The anti-tachycardia pacing is delivered as a burst of one or more pacing pulses at a specified coupling interval after a sensed ventricular polarization. By sensing if an evoked potential occurs, the device can determine whether or not the anti-tachycardia pacing burst has captured the ventricle and can adjust the coupling interval and/or other parameters accordingly.
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Citations
20 Claims
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1. A method for delivery of anti-tachycardia pacing (ATP) therapy by a cardiac rhythm management device, comprising:
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generating sense signals representing electrical activity in a heart chamber and detecting a chamber sense when a sense signal exceeds a specified intrinsic detection threshold; delivering a burst of one or more pacing pulses in accordance with an anti-tachycardia pacing protocol; determining if one or more pacing pulses of the burst have captured the heart chamber; and
,adjusting a timing parameter of the burst in accordance with the capture determination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cardiac rhythm management device, comprising:
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a sensing channel for generating sense signals representing electrical activity in a heart chamber; a pacing channel for delivering paces to a selected heart chamber; a controller for controlling the delivery of pacing pulses in accordance with a programmed mode, detecting a chamber sense when the sense signal exceeds a specified intrinsic detection threshold, and detecting an evoked response when the sense signal following a pace exceeds a specified evoked response detection threshold; and
,wherein the controller is further programmed to deliver a burst of one or more pacing pulses to the heart chamber in accordance with an anti-tachycardia pacing protocol upon detection of a tachycardia, determine whether a pacing pulse of the burst has captured the heart chamber, and adjust a timing parameter of the burst in accordance with the capture determination. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification