Method and apparatus for maintaining synchronized pacing
First Claim
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1. A method for operating a cardiac rhythm management device, comprising:
- pacing a first ventricle in accordance with a pacing mode in which the first ventricle is paced at a first specified pacing instant defined with respect to expiration of an escape interval which is reset by an event in the contralateral second ventricle;
inhibiting a pace to the first ventricle during a ventricular protective period that is initiated by a first ventricular sense; and
, delaying a pace to the first ventricle by a protective delay interval when the pace would otherwise occur within the ventricular 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.
71 Citations
20 Claims
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1. A method for operating a cardiac rhythm management device, comprising:
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pacing a first ventricle in accordance with a pacing mode in which the first ventricle is paced at a first specified pacing instant defined with respect to expiration of an escape interval which is reset by an event in the contralateral second ventricle;
inhibiting a pace to the first ventricle during a ventricular protective period that is initiated by a first ventricular sense; and
,delaying a pace to the first ventricle by a protective delay interval when the pace would otherwise occur within the ventricular 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 a first ventricle and second ventricles and generating sense signals upon detection of depolarization occurring in a ventricle;
a pacing electrode adapted for delivering paces to the first ventricle;
a controller for controlling the delivery of paces in accordance with a programmed pacing mode; and
,wherein the controller is programmed to;
pace the first ventricle such that the first ventricle is paced at a first specified pacing instant defined with respect to expiration of an escape interval which is reset by an event in the contralateral second ventricle;
inhibit a pace to the first ventricle during a ventricular protective period that is initiated by a first ventricular sense; and
,delay a pace to the first ventricle by a protective delay interval when the pace would otherwise occur within the ventricular protective period. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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- 12. The device of claim 111 wherein the first ventricle is the left ventricle and the second ventricle is the right ventricle.
Specification