Method and device for switching between arrhythmia prevention modes
First Claim
1. A method for pacing a heart, comprising:
- monitoring an electrogram (EGM) of the heart;
determining whether the heart is in a normal sinus rhythm or in an abnormal rhythm;
determining a level of premature ventricular contraction risk as a function of a pacing rate;
delivering pacing pulses to either an atrium or a ventricle at a first rate to reduce the level of premature ventricular contraction risk when the heart is in a normal sinus rhythm; and
delivering pacing pulses to a ventricle at a second rate to regularize ventricular rhythm when the heart is in an abnormal rhythm.
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Accused Products
Abstract
A device, such as an implantable cardiac device, and method for switching between arrhythmia prevention modes is disclosed. The method includes monitoring an electrocardiogram (EGM) of the heart, determining whether the heart is in a normal sinus rhythm or in an abnormal rhythm, delivering pacing pulses at a first rate to either an atrium or a ventricle when the heart is in a normal sinus rhythm, and delivering pacing pulses to a ventricle at a second rate when the heart is in an abnormal rhythm, such as an atrial arrhythmia. The first rate is selected to minimize the occurrence of premature ventricular contractions, and the second rate is selected to both minimize the occurrence of premature ventricular contractions and minimize the occurrence of premature conducted beats.
24 Citations
29 Claims
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1. A method for pacing a heart, comprising:
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monitoring an electrogram (EGM) of the heart; determining whether the heart is in a normal sinus rhythm or in an abnormal rhythm; determining a level of premature ventricular contraction risk as a function of a pacing rate; delivering pacing pulses to either an atrium or a ventricle at a first rate to reduce the level of premature ventricular contraction risk when the heart is in a normal sinus rhythm; and delivering pacing pulses to a ventricle at a second rate to regularize ventricular rhythm when the heart is in an abnormal rhythm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device for pacing a heart, comprising:
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means for monitoring an electrogram (EGM) of the heart; means for determining whether the heart is in a normal sinus rhythm or in an abnormal rhythm; means for determining a level of premature ventricular contraction risk as a function of a pacing rate; means for delivering pacing pulses to either an atrium or a ventricle at a first rate to reduce the level of premature ventricular contraction risk when the heart is in a normal sinus rhythm; and means for delivering pacing pulses to a ventricle at a second rate to regularize ventricular rhythm when the heart is in an abnormal rhythm. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for pacing a heart, comprising:
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monitoring an electrogram (EGM) of the heart; determining whether the heart is in a normal sinus rhythm or in an abnormal rhythm; determining a level of premature ventricular contraction risk and occurrence of premature conducted beats as a function of a pacing rate; selecting a first rate to minimize the occurrence of premature ventricular contractions (PVCs); selecting a second rate based on minimizing the occurrence of premature ventricular contractions (PVCs) and minimizing the occurrence of premature conducted beats (PCBs); delivering pacing pulses at the first rate when the heart is in a normal sinus rhythm; and delivering pacing pulses at the second rate when the heart is in an abnormal rhythm.
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Specification