Apparatus and method for pacing mode switching during atrial tachyarrhythmias
First Claim
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1. A cardiac pacemaker, comprising:
- an atrial sensing channel for sensing atrial depolarizations and generating atrial sense signals in accordance therewith;
one or more ventricular sensing channels for sensing ventricular depolarizations and generating ventricular sense signals in accordance therewith;
right and left pacing channels for delivering paces to the right and left ventricles;
a controller for controlling the delivery of paces and detecting tachyarrhythmias;
wherein the controller is configured to operate in a normal pacing mode that does not include resynchronization pacing when no atrial tachyarrhythmia is detected; and
,wherein the controller is configured to switch the pacemaker to an atrial fibrillation pacing mode upon detection of an atrial tachyarrhythmia, and wherein the atrial fibrillation pacing mode includes resynchronization pacing that paces the left ventricle.
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Abstract
A method for operating a cardiac pacemaker in which the mode of operation of the pacemaker is altered in response to detecting an episode of atrial tachycardia. In accordance with the invention, the pacemaker'"'"'s pacing mode is altered in a manner that attempts to maintain hemodynamic stability during the atrial tachycardia. Such a mode switch is particularly applicable to pacemaker patients suffering from some degree of congestive heart failure.
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Citations
20 Claims
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1. A cardiac pacemaker, comprising:
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an atrial sensing channel for sensing atrial depolarizations and generating atrial sense signals in accordance therewith; one or more ventricular sensing channels for sensing ventricular depolarizations and generating ventricular sense signals in accordance therewith; right and left pacing channels for delivering paces to the right and left ventricles; a controller for controlling the delivery of paces and detecting tachyarrhythmias; wherein the controller is configured to operate in a normal pacing mode that does not include resynchronization pacing when no atrial tachyarrhythmia is detected; and
,wherein the controller is configured to switch the pacemaker to an atrial fibrillation pacing mode upon detection of an atrial tachyarrhythmia, and wherein the atrial fibrillation pacing mode includes resynchronization pacing that paces the left ventricle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating cardiac pacemaker, comprising:
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sensing atrial depolarizations to detect atrial tachyarrhythmias; operating in a normal pacing mode that does not include resynchronization pacing when no atrial tachyarrhythmia is detected; and
,switching the pacemaker to an atrial fibrillation pacing mode upon detection of an atrial tachyarrhythmia, wherein the atrial fibrillation pacing mode includes resynchronization pacing that paces the left ventricle. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification