Rapid Shallow Breathing Detection for use in Congestive Heart Failure Status Determination
First Claim
1. A system, comprising:
- a medical device comprising sensing circuitry;
detection circuitry disposed in the medical device and coupled to the sensing circuitry, the detection circuitry configured to detect one or more respiratory parameters;
a memory configured to store a baseline weight of a patient; and
a processor coupled to the memory and the detection circuitry, the processor configured to compute a change in the one or more respiratory parameters relative to a first threshold, compute a prediction of change in patient weight based on the computed change in the one or more respiratory parameters, and generate an output signal in response to the patient weight change prediction exceeding a second threshold.
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Abstract
Systems and methods involve use of a medical device comprising sensing circuitry. One or more respiratory parameters are detected using the device. Patient baseline weight is provided, and an output signal indicative of a patient'"'"'s congestive heart failure status is generated based on a change in the one or more respiratory parameters and a change in the patient'"'"'s measured weight or predicted weight relative to the patient baseline weight. The respiratory parameters may include one or more of respiration rate, relative tidal volume, an index indicative of rapid shallow breathing by the patient, an index derived by computing a respiration rate and a tidal volume for each patient breath, and an index indicative of dyspnea, for example.
75 Citations
24 Claims
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1. A system, comprising:
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a medical device comprising sensing circuitry; detection circuitry disposed in the medical device and coupled to the sensing circuitry, the detection circuitry configured to detect one or more respiratory parameters; a memory configured to store a baseline weight of a patient; and a processor coupled to the memory and the detection circuitry, the processor configured to compute a change in the one or more respiratory parameters relative to a first threshold, compute a prediction of change in patient weight based on the computed change in the one or more respiratory parameters, and generate an output signal in response to the patient weight change prediction exceeding a second threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method, comprising:
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detecting one or more respiratory parameters; storing a baseline weight of a patient; computing a change in the one or more respiration parameters relative to a first threshold; computing a prediction of change in patient weight based on the change in the one or more respiratory parameters; and generating an output signal in response to the patient weight change prediction exceeding a second threshold. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification