Methods and apparatus for detecting heart failure event using patient chronic conditions
First Claim
1. A medical device, comprising:
- a patient status input unit configured to receive at least a first demographic characteristic indicator and a second demographic characteristic indicator of a patient, the second demographic characteristic indicator non-identical to the first demographic characteristic indicator;
a signal receiver circuit configured to receive one or more physiologic signals of the patient;
a signal metrics generator circuit, coupled to the signal receiver circuit, configured to generate a plurality of signal metrics from the received one or more physiologic signals, including to generate a first set of one or more signal metrics from the received one or more physiologic signals according to a first association with the first demographic characteristic indicator and in response to the first demographic characteristic indicator meeting at least one first specified criterion, and to generate a second set of signal metrics from the received one or more physiologic signals according to a second association with the second demographic characteristic indicator and in response to the second demographic characteristic indicator meeting at least one second specified criterion;
a patient-specific signal metric selector circuit configured to select a subset of patient-specific signal metrics from the first and second sets of signal metrics using signal metric performance measures of at least one metric from the first and second sets of signal metrics; and
a target event or condition detector circuit configured to detect a target heart failure event or condition of the patient when the selected subset of patient-specific signal metrics satisfies a detection threshold criterion, wherein the target event or condition detector circuit is further configured to generate an alert of the detected target heart failure event.
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Abstract
Devices and methods for detecting physiological target event such as events indicative of HF decompensation status are described. A medical device is configured to receive at least a first and a second chronic condition indictors of a patient, receive one or more physiologic signals from the patient, and generate a plurality of signal metrics when the first and the second chronic condition indicators meet their respective criterion. The medical device can detect the target event or condition using one or more patient-specific signal metrics selected from a group including both the first and the second set of the signal metrics. The medical device and the methods can be configured to detect an event indicative of HF decompensation.
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Citations
18 Claims
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1. A medical device, comprising:
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a patient status input unit configured to receive at least a first demographic characteristic indicator and a second demographic characteristic indicator of a patient, the second demographic characteristic indicator non-identical to the first demographic characteristic indicator; a signal receiver circuit configured to receive one or more physiologic signals of the patient; a signal metrics generator circuit, coupled to the signal receiver circuit, configured to generate a plurality of signal metrics from the received one or more physiologic signals, including to generate a first set of one or more signal metrics from the received one or more physiologic signals according to a first association with the first demographic characteristic indicator and in response to the first demographic characteristic indicator meeting at least one first specified criterion, and to generate a second set of signal metrics from the received one or more physiologic signals according to a second association with the second demographic characteristic indicator and in response to the second demographic characteristic indicator meeting at least one second specified criterion; a patient-specific signal metric selector circuit configured to select a subset of patient-specific signal metrics from the first and second sets of signal metrics using signal metric performance measures of at least one metric from the first and second sets of signal metrics; and a target event or condition detector circuit configured to detect a target heart failure event or condition of the patient when the selected subset of patient-specific signal metrics satisfies a detection threshold criterion, wherein the target event or condition detector circuit is further configured to generate an alert of the detected target heart failure event. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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receiving at least a first demographic characteristic indicator and a second demographic characteristic indicator of a patient, the second demographic characteristic indicator non-identical to the first demographic characteristic indicator; sensing one or more physiologic signals of the patient; generating a plurality of signal metrics from the sensed one or more physiologic signals, including generating a first set of one or more signal metrics according to a first association with the first demographic characteristic indicator and in response to the first demographic characteristic indicator meeting at least one first specified criterion, and generating a second set of signal metrics according to a second association with the second demographic characteristic indicator and in response to the second demographic characteristic indicator meeting at least one second specified criterion; selecting from the first and second sets of signal metrics a subset of patient-specific signal metrics using signal metric performance measures of at least one metric from the first and second sets of signal metrics; applying a target event detection algorithm to the selected patient-specific signal metric subset to detect a target heart failure event or condition of the patient; and generating an alert of the detected target heart failure event. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification