Method and apparatus for maintaining synchronized pacing
First Claim
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1. A method for operating a cardiac rhythm management device, comprising:
- sensing cardiac sites designated as a rate site and one or more synchronized sites through separate channels and generating sense signals upon detection of depolarization occurring at a site;
pacing the rate site in accordance with bradycardia pacing mode based upon rate site senses and paces;
pacing a synchronized site in accordance with a synchronized pacing mode wherein pacing of the synchronized site is inhibited during a synchronized site protective period that is initiated by a synchronized site sense or pace; and
, delaying a pace to the synchronized site by a protective delay interval when the pace would otherwise occur within the synchronized site protective period.
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Abstract
A device and method for cardiac rhythm management in which a cardiac site is paced in accordance with a pacing mode that employs sense signals from a different cardiac site. A protective period triggered by the sensing of intrinsic activity at the paced site is used to delay pacing by a protective delay interval without otherwise disturbing the pacing algorithm.
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20 Claims
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1. A method for operating a cardiac rhythm management device, comprising:
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sensing cardiac sites designated as a rate site and one or more synchronized sites through separate channels and generating sense signals upon detection of depolarization occurring at a site;
pacing the rate site in accordance with bradycardia pacing mode based upon rate site senses and paces;
pacing a synchronized site in accordance with a synchronized pacing mode wherein pacing of the synchronized site is inhibited during a synchronized site protective period that is initiated by a synchronized site sense or pace; and
,delaying a pace to the synchronized site by a protective delay interval when the pace would otherwise occur within the synchronized site protective period. - 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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sensing channels for sensing cardiac sites designated as a rate site and one or more synchronized sites and generating sense signals upon detection of depolarization occurring at a site;
pacing channels for delivering paces to the rate and synchronized sites;
a controller for controlling the delivery of paces in accordance with a programmed pacing mode; and
,wherein the controller is programmed to pace the synchronized site in accordance with a synchronized pacing mode, to inhibit pacing of the synchronized site during a synchronized site protective period that is initiated by a synchronized site sense or pace, and to delay a pace to the synchronized site by a protective delay interval when the pace would otherwise occur within the synchronized site protection period. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification