Methods and systems for recognizing arrhythmias using neural stimulation
First Claim
1. A method for classifying and treating an arrhythmia, comprising:
- implementing a programmed arrhythmia recognition routine to classify the arrhythmia before treating the arrhythmia, wherein implementing the programmed arrhythmia recognition includes;
sensing a characteristic of a ventricle before delivering a diagnostic neural stimulation;
delivering the diagnostic neural stimulation to diagnose the arrhythmia;
sensing the characteristic of the ventricle while delivering the diagnostic neural stimulation; and
using the sensed characteristic of the ventricle before and during the diagnostic neural stimulation to classify the arrhythmia as either a supraventricular tachyarrhythmia (SVT) or a ventricular tachycardia (VT); and
implementing a programmed response to classifying the arrhythmia after completing the programmed arrhythmia recognition routine, including;
delivering a VT therapy to treat the VT when the classified arrhythmia is the VT; and
either delivering no therapy or delivering an SVT therapy to treat the SVT when the classified arrhythmia is the SVT,wherein;
the VT therapy and the SVT therapy each have distinct protocols from the diagnostic neural stimulation and are delivered after completion of the programmed arrhythmia recognition routine; and
the SVT therapy includes myocardial stimulation therapy.
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Abstract
In various method embodiments for classifying an arrhythmia, a characteristic of a ventricle is sensed before delivering a diagnostic neural stimulation. The diagnostic neural stimulation is delivered, and the characteristic of the ventricle is sensed while delivering the diagnostic neural stimulation. The sensed characteristic of the ventricle before and during the diagnostic neural stimulation is used to classify the arrhythmia as either a supraventricular tachyarrhythmia (SVT) or a ventricular tachycardia (VT). According to various embodiments, the characteristic of the ventricle is ventricular rate, similarity values of sensed ventricular morphology to a normal sinus rhythm (NSR), or ventricular hemodynamics. Various embodiments use ventricular rate regularity before and during the diagnostic neural stimulation to classify an SVT as atrial fibrillation (AF) or as another SVT.
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Citations
22 Claims
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1. A method for classifying and treating an arrhythmia, comprising:
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implementing a programmed arrhythmia recognition routine to classify the arrhythmia before treating the arrhythmia, wherein implementing the programmed arrhythmia recognition includes; sensing a characteristic of a ventricle before delivering a diagnostic neural stimulation; delivering the diagnostic neural stimulation to diagnose the arrhythmia; sensing the characteristic of the ventricle while delivering the diagnostic neural stimulation; and using the sensed characteristic of the ventricle before and during the diagnostic neural stimulation to classify the arrhythmia as either a supraventricular tachyarrhythmia (SVT) or a ventricular tachycardia (VT); and implementing a programmed response to classifying the arrhythmia after completing the programmed arrhythmia recognition routine, including; delivering a VT therapy to treat the VT when the classified arrhythmia is the VT; and either delivering no therapy or delivering an SVT therapy to treat the SVT when the classified arrhythmia is the SVT, wherein; the VT therapy and the SVT therapy each have distinct protocols from the diagnostic neural stimulation and are delivered after completion of the programmed arrhythmia recognition routine; and the SVT therapy includes myocardial stimulation therapy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for classifying and treating an arrhythmia, comprising:
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an arrhythmia discriminator configured to discriminate between ventricular tachycardia (VT) and supraventricular tachycardia (SVT); a neural stimulator configured to generate a neural stimulation signal and deliver the neural stimulation signal to an autonomic neural target; a therapy delivery circuit configured to generate therapy to treat the arrhythmia; and a controller operably connected to the arrhythmia discriminator, the therapy delivery circuit and the neural stimulator, wherein the controller is configured to implement a programmed arrhythmia recognition routine to classify the arrhythmia, and then after completing the programmed arrhythmia recognition routine implement a programmed response to classifying the arrhythmia, wherein; to implement the programmed arrhythmia recognition routine, the controller is configured to control the neural stimulator to deliver a diagnostic neural stimulation for diagnosing the arrhythmia, to determine a ventricle characteristic before the diagnostic neural stimulation and to determine a ventricle characteristic during the diagnostic neural stimulation, to classify the arrhythmia as either the SVT or the VT based on the ventricle characteristic before the diagnostic neural stimulation and the ventricle characteristic during the diagnostic neural stimulation; and to implement the programmed response after completing the programmed arrhythmia recognition routine, the controller is configured to deliver a VT therapy to treat the VT when the classified arrhythmia is the VT, and to deliver an SVT therapy to treat the SVT when the classified arrhythmia is the SVT, wherein; the VT therapy and the SVT therapy each have distinct protocols from the diagnostic neural stimulation; and the SVT therapy includes myocardial stimulation therapy. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification