Mode switching heart stimulation apparatus and method
First Claim
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1. An implantable cardiac stimulation system comprising:
- at least one atrial tachyarrhythmia detection circuit adapted to detect atrial tachyarrhythmias;
at least one cardiac sensing circuit configured to sense cardiac electrical signals using a plurality of different ventricular sensing vectors,at least one pacing circuit configured to pace at least one ventricle in accordance with a plurality of modes of pacing; and
wherein the at least one atrial tachyarrhythmia detection circuit is configured to select a first one of the plurality of ventricular sensing vectors and a first one of the modes of pacing during a normal mode of operation and to select a second one of the plurality of ventricular sensing vectors and a second one of the modes of pacing in response to the detection of an atrial tachyarrhythmia.
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Abstract
In a heart stimulation device a mode of operation is switched in response to detection of atrial tachyarrhythmia such as atrial fibrillation. The stimulation device may initially operate in a normal mode of pacing then, upon detection of atrial tachyarrhythmia, the stimulation device may change how it senses signals and it may switch to another mode of pacing at one or more sites in the ventricle.
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Citations
20 Claims
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1. An implantable cardiac stimulation system comprising:
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at least one atrial tachyarrhythmia detection circuit adapted to detect atrial tachyarrhythmias; at least one cardiac sensing circuit configured to sense cardiac electrical signals using a plurality of different ventricular sensing vectors, at least one pacing circuit configured to pace at least one ventricle in accordance with a plurality of modes of pacing; and wherein the at least one atrial tachyarrhythmia detection circuit is configured to select a first one of the plurality of ventricular sensing vectors and a first one of the modes of pacing during a normal mode of operation and to select a second one of the plurality of ventricular sensing vectors and a second one of the modes of pacing in response to the detection of an atrial tachyarrhythmia. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system comprising:
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means for interacting with at least one ventricle of a heart in accordance with a first mode of pacing and a first ventricular sensing vector; means for detecting an atrial tachyarrhythmia; and means for switching to a second mode of pacing and a second ventricular sensing vector in response to detection of the atrial tachyarrhythmia.
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Specification