Multi-sensor strategy for heart failure patient management
First Claim
1. A method comprising:
- sensing a plurality of separate physiologic sensor signals produced using a plurality of sensors, wherein each sensor signal includes physiological information;
detecting a physiological change event from a sensor signal;
determining whether the detected physiological change events are indicative of a change in heart failure (HF) status using a first device-based rule applied to the physiological change events;
determining whether to rule out a positive first rule HF determination using a second device-based rule applied to at least one of the physiological change events;
generating an indication of whether the change in HF status occurred according to the first and second rules; and
changing a patient therapy according to the generated indication.
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Abstract
An apparatus comprises plurality of sensors and a processor. Each sensor provides a sensor signal that includes physiological information and at least one sensor is implantable. The processor includes a physiological change event detection module that detects a physiological change event from a sensor signal and produces an indication of occurrence of one or more detected physiological change events, and a heart failure (HF) detection module. The HF detection module determines, using a first rule, whether the detected physiological change event indicative of a change in HF status of a subject, determines whether to override the first rule HF determination using a second rules, and declares whether the change in HF status occurred according to the first and second rules.
34 Citations
20 Claims
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1. A method comprising:
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sensing a plurality of separate physiologic sensor signals produced using a plurality of sensors, wherein each sensor signal includes physiological information; detecting a physiological change event from a sensor signal; determining whether the detected physiological change events are indicative of a change in heart failure (HF) status using a first device-based rule applied to the physiological change events; determining whether to rule out a positive first rule HF determination using a second device-based rule applied to at least one of the physiological change events; generating an indication of whether the change in HF status occurred according to the first and second rules; and changing a patient therapy according to the generated indication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical device system comprising:
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a processor for receiving a plurality of sensor signals, wherein the processor includes; a physiological change event detection circuit configured to;
detect a physiological change event of a subject from a sensor signal; and
produce an indication of occurrence of one or more physiological change events; anda heart failure (HF) detection circuit configured to;
determine whether the detected physiological change events are indicative of a change in HF status using a first rule applied to the physiological change events;
determine whether to rule out a positive first rule HF determination using a second rule applied to at least one of the physiological change events; andgenerate an indication of whether the change in HF status occurred according to the first and second rules. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification