SYSTEMS, DEVICES, AND METHODS FOR TACHYARRHYTHMIA DISCRIMINATION OR THERAPY DECISIONS
First Claim
1. A system comprising:
- an atrial contraction detector circuit, including an atrial rate detector circuit to detect an atrial rate between atrial contractions of a heart;
a ventricular contraction detector circuit, including a ventricular rate detector circuit to detect a ventricular rate between ventricular contractions of the heart;
a tachyarrhythmia classification circuit, configured to classify a tachyarrhythmia using a rhythm discrimination parameter having a value; and
a processor, coupled to the atrial and ventricular contraction detector circuits and the tachyarrhythmia classification circuit, the processor configured to adjust the value of the rhythm discrimination parameter using a relationship between the atrial rate and the ventricular rate.
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Abstract
Systems, devices, and methods detect or classify tachyarrhythmias or make a therapy decision. A tachyarrhythmia can be classified using a rhythm discrimination parameter having a value. In certain examples, the value of the rhythm discrimination parameter can be adjusted using a relationship between a detected atrial rate and a detected ventricular rate, or the value can be adjusted using information about at least one of the atrial rate or the ventricular rate in addition to using the relationship between the atrial rate and the ventricular rate. These techniques can improve the specificity of arrhythmia detection or classification, allow anti-tachyarrhythmia therapy to be better tailored to the particular tachyarrhythmia, or provide more automatic operation making it easier for a physician to use an implantable device.
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Citations
28 Claims
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1. A system comprising:
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an atrial contraction detector circuit, including an atrial rate detector circuit to detect an atrial rate between atrial contractions of a heart;
a ventricular contraction detector circuit, including a ventricular rate detector circuit to detect a ventricular rate between ventricular contractions of the heart;
a tachyarrhythmia classification circuit, configured to classify a tachyarrhythmia using a rhythm discrimination parameter having a value; and
a processor, coupled to the atrial and ventricular contraction detector circuits and the tachyarrhythmia classification circuit, the processor configured to adjust the value of the rhythm discrimination parameter using a relationship between the atrial rate and the ventricular rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system comprising:
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means for detecting atrial contractions of a heart and an atrial rate between the detected atrial contractions;
means for detecting ventricular contractions of the heart and a ventricular rate between the detected ventricular contractions;
means for classifying a tachyarrhythmia using a rhythm discrimination parameter having a value; and
means for adjusting the value of the rhythm discrimination parameter using a relationship between the atrial rate and the ventricular rate.
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15. A method comprising:
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detecting atrial contractions of a heart and an atrial rate between the detected atrial contractions;
detecting ventricular contractions of the heart and a ventricular rate between the detected ventricular contractions;
classifying a tachyarrhythmia using a rhythm discrimination parameter having a value; and
adjusting the value of the rhythm discrimination parameter using a relationship between the atrial rate and the ventricular rate. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification