Method and system for automatic anti-tachycardia pacing
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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
44 Claims
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1-24. -24. (Canceled)
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25. 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 (26, 27, 28, 29, 30, 31, 32, 33, 34, 42)
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35. 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 burts in accordance with the capture determination. - View Dependent Claims (36, 37, 38, 39, 40, 41, 43, 44)
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Specification