Systems and methods for determining respiration metrics
First Claim
1. A method of determining one or more respiration metrics, comprising:
- generating a signal indicative of respiration of a patient using one or more sensors;
receiving the signal indicative of respiration in an implantable device and determining, for each aperture of a plurality of shorter time apertures and for each aperture of a plurality of longer time apertures, an estimated characteristic of the respiration of the patient based on the respiration signal; and
the implantable device determining one or more respiration metrics using one or both of the estimated respiration characteristics of the plurality of shorter time apertures and the estimated respiration characteristics of the plurality of longer time apertures, wherein determining the one or more respiration metrics includes determining a maximum respiration metric based on the estimated characteristics for each of the plurality of shorter time apertures and determining a minimum respiration metric based on the estimated characteristics of each of the plurality of longer time apertures.
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Abstract
Systems, devices and methods provide for acquiring respiration information. A respiration information device includes timer circuitry to time a plurality of shorter time apertures and a plurality of longer time apertures. A respiration sensor, which may be implemented as a transthoracic impedance sensor, is configured to generate a signal indicative of patient respiration. For each aperture of the plurality of shorter time apertures and for each aperture of the plurality of longer time apertures, an estimated characteristic of the respiration is determined. Respiration metrics are developed using one or both of the estimated respiration characteristics of the shorter time apertures and the estimated respiration characteristics of the longer time apertures.
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Citations
20 Claims
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1. A method of determining one or more respiration metrics, comprising:
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generating a signal indicative of respiration of a patient using one or more sensors; receiving the signal indicative of respiration in an implantable device and determining, for each aperture of a plurality of shorter time apertures and for each aperture of a plurality of longer time apertures, an estimated characteristic of the respiration of the patient based on the respiration signal; and the implantable device determining one or more respiration metrics using one or both of the estimated respiration characteristics of the plurality of shorter time apertures and the estimated respiration characteristics of the plurality of longer time apertures, wherein determining the one or more respiration metrics includes determining a maximum respiration metric based on the estimated characteristics for each of the plurality of shorter time apertures and determining a minimum respiration metric based on the estimated characteristics of each of the plurality of longer time apertures. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method, comprising:
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generating a signal indicative of respiration of a patient using one or more sensors; receiving the signal indicative of respiration in an implantable device; the implantable device determining, for each aperture of a plurality of shorter time apertures and for each aperture of a plurality of longer time apertures, an estimated characteristic of the respiration based on the respiration signal; the implantable device determining one or more respiration metrics using one or both of the estimated respiration characteristics of the plurality of shorter time apertures and the estimated respiration characteristics of the plurality of longer time apertures, wherein determining the one or more respiration metrics includes determining a maximum respiration metric based on the estimated characteristics for each of the plurality of shorter time apertures and determining a minimum respiration metric based on the estimated characteristics of each of the plurality of longer time apertures; the implantable device identifying spurious respiration cycles associated with cardiac activity; and the implantable device excluding the spurious respiration cycles when determining the estimated respiration characteristic. - View Dependent Claims (15, 16)
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17. A method, comprising:
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generating a signal indicative of respiration of a patient using one or more sensors; receiving the signal indicative of respiration in an implantable device and determining, for each aperture of a plurality of shorter time apertures and for each aperture of a plurality of longer time apertures, an estimated characteristic of the respiration based on the respiration signal; and the implantable device determining one or more respiration metrics using one or both of the estimated respiration characteristics of the plurality of shorter time apertures and the estimated respiration characteristics of the plurality of longer time apertures, wherein determining the one or more respiration metrics includes determining a maximum respiration metric based on the estimated characteristics for each of the plurality of shorter time apertures and determining a minimum respiration metric based on the estimated characteristics of each of the plurality of longer time apertures and wherein at least some of the plurality of shorter time apertures overlap each other and at least some of the plurality of longer time apertures overlap each other. - View Dependent Claims (18)
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19. A method of determining one or more respiration metrics, comprising:
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generating a signal indicative of respiration of a patient using one or more sensors; receiving the signal indicative of respiration in an implantable device and determining, for each aperture of a plurality of shorter time apertures and for each aperture of a plurality of longer time apertures, an estimated characteristic of the respiration based on the respiration signal; the implantable device determining one or more respiration metrics using one or both of the estimated respiration characteristics of the plurality of shorter time apertures and the estimated respiration characteristics of the plurality of longer time apertures, wherein the estimated respiration characteristic of each shorter time aperture includes a median value of respiration rates measured during the shorter time aperture and the estimated respiration characteristic of each longer time aperture includes a median value of respiration rates measured during the longer time aperture and wherein determining the respiration metrics includes determining a maximum of the median values of the respiration rates measured for each of the plurality of shorter time apertures and determining a minimum of the median values of the respiration rates measured for each of the plurality of longer time apertures. - View Dependent Claims (20)
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Specification