Heart failure event detection using multi-level categorical fusion
First Claim
1. A system for detecting a target physiological event, comprising:
- a receiver circuit configured to receive patient physiological data;
at least two categorical risk analyzer circuits, each including;
a category-specific input selection circuit configured to select a portion of the received physiological data according to an associative physiological condition, wherein the associative physiological condition is a different type of condition than the target physiological event; and
a categorical risk calculator circuit configured to calculate a categorical risk index using the selected portion of the received physiological data, the categorical risk index indicating a patient risk of having the associative physiological condition; and
a detector circuit, coupled to the at least two categorical risk analyzer circuits, configured to generate a composite risk indicator using the categorical risk indices respectively provided by the at least two categorical risk analyzer circuits, and to detect the target physiological event using the composite risk indicator.
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Abstract
Systems and methods for detecting a present, or predicting a future, target physiologic event such as worsening heart failure (HF) are described. A system can comprise a patient information receiver circuit, at least two categorical risk analyzer circuits, and a categorical fusion circuit. The patient information receiver circuit receives physiologic signals and generates signal trends. The categorical risk analyzer circuit receives a category-specific input selected from the signal trends according to an associative physiologic condition indicative or correlative of the target event. The categorical risk analyzer circuit produces a signal trend metric indicating relative change in signal strength over time. The categorical risk analyzer circuit calculates a categorical risk index that indicates likelihood of the patient developing or presenting the associative physiologic condition. The categorical fusion circuit uses the categorical risk indices to generate a composite risk indicator indicating likelihood of the patient developing the target physiologic event.
52 Citations
20 Claims
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1. A system for detecting a target physiological event, comprising:
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a receiver circuit configured to receive patient physiological data; at least two categorical risk analyzer circuits, each including; a category-specific input selection circuit configured to select a portion of the received physiological data according to an associative physiological condition, wherein the associative physiological condition is a different type of condition than the target physiological event; and a categorical risk calculator circuit configured to calculate a categorical risk index using the selected portion of the received physiological data, the categorical risk index indicating a patient risk of having the associative physiological condition; and a detector circuit, coupled to the at least two categorical risk analyzer circuits, configured to generate a composite risk indicator using the categorical risk indices respectively provided by the at least two categorical risk analyzer circuits, and to detect the target physiological event using the composite risk indicator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A non-transitory machine-readable storage medium, comprising a plurality of instructions that, responsive to being executed with processor circuitry of a computing device, cause the computing device to:
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receive patient physiological data obtained; select a first portion of the received physiological data according to a first associative physiological condition, and select a second portion of the received physiological data according to a second associative physiological condition, the first and second associative physiological conditions each being of a different type of condition than a target physiological event; calculate a first categorical risk index using the selected first portion of the received physiological data, and calculating a second categorical risk index using the selected second portion of the received physiological data, wherein the first categorical risk index indicates a patient risk of having the first associative physiological condition; and
the second categorical risk index indicates a patient risk of having the second associative physiological condition;generate a composite risk indicator using the first and second categorical risk indices; and detect the target physiological event using composite risk indicator. - View Dependent Claims (11, 12, 13, 14)
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15. A method for detecting a target physiological event via a medical system, the method comprising:
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receiving patient physiological data via a receiver circuit; selecting;
via an input selection circuit;
a first portion of the received physiological data according to a first associative physiological condition, and a second portion of the received physiological data according to a second associative physiological condition, the first and second associative physiological conditions each being of a different type of condition than a target physiological event;calculating, via a risk analyzer circuit, a first categorical risk index using the selected first portion of the received physiological data, and a second categorical risk index using the selected second portion of the received physiological data, wherein the first categorical risk index indicates a patient risk of having the first associative physiological condition, and the second categorical risk index indicates a patient risk of having the second associative physiological condition; generating, via a detector circuit, a composite risk indicator using the first and second categorical risk indices; and detecting, via the detector circuit, the target physiological event using composite risk indicator. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification