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US 10,702,180 B2Granted
Atrial fibrillation discrimination using heart rate clustering
AssigneeCardiac Pacemakers, Inc.
InventorsDavid L. Perschbacher, Sunipa Saha, Deepa Mahajan
Life of this patent
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Abstract
This document discusses, among other things, apparatus, systems, and methods to determine a first atrial fibrillation (AF) indication using received information about a heart over a first period, to cluster depolarization information about the heart over the first period, and to discriminate between an atrial fibrillation (AF) event and a non-AF event in the first period using the determined first AF indication the clustered depolarization information.
Claims20
A system, comprising:
- an atrial fibrillation (AF) detection circuit configured to receive information about a heart over a first period including a number of cardiac intervals, and to discriminate between an AF event and a non-AF event, the AF detection circuit including:
- a first AF detection circuit configured to determine a first AF indication in the first period using the received information about the heart;
- and
- a second AF detection circuit configured to receive depolarization information about the heart over the first period, to bin the cardiac intervals into separate rate bins using the received depolarization information, and to cluster the received depolarization information,
- wherein the AF detection circuit is configured to discriminate between an AF event and a non-AF event in the first period using the determined first AF indication and the clustered depolarization information, and
- wherein, to cluster the received depolarization information, the second AF detection circuit is configured to group successive rate bins having bin counts greater than a bin threshold and a group bin count greater than a threshold percentage of the number of cardiac intervals over the first period.
3 more elements
A method, comprising:
- receiving information about a heart over a first period including a number of cardiac intervals using an atrial fibrillation (AF) detection circuit;
- determining, using a first AF detection circuit, a first AF indication in the first period using the received information about the heart;
- and
- when the first AF indication is indicative of an AF event in the first period:
- receiving depolarization information about the heart over the first period using a second AF detection circuit;
- binning, using the second AF detection circuit, the cardiac intervals into separate rate bins using the received depolarization information;
- clustering, using the second AF detection circuit, the received depolarization information, comprising grouping successive rate bins having bin counts greater than a bin threshold and a group bin count greater than a threshold percentage of the number of cardiac intervals over the first period;
- and
- discriminating between an AF event and a non-AF event in the first period using the clustered depolarization information.
6 more elements
At least one non-transitory machine-readable medium including instructions that, when performed by a medical device, cause the medical device to:
- receive information about a heart over a first period including a number of cardiac intervals;
- determine a first atrial fibrillation (AF) indication in the first period using the received information about the heart;
- and
- when the first AF indication is indicative of an AF event in the first period:
- receive depolarization information about the heart over the first period;
- bin the cardiac intervals into separate rate bins using the received depolarization information;
- cluster the received depolarization information, including grouping successive rate bins having bin counts greater than a bin threshold and a group bin count greater than a threshold percentage of the number of cardiac intervals over the first period;
- and
- discriminate between an AF event and a non-AF event in the first period using the clustered depolarization information.
6 more elements
Dependencies are inferred from the claim text.