Systems and Methods for Determining Respiration Metrics
AssigneeCardiac Pacemakers, Inc.
InventorJohn Hatlestad
Life of this patent
Estimating the term…
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.
Claims20
A method, comprising:
- generating a signal indicative of respiration;
- 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
- 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.
A method, comprising:
- generating a signal indicative of respiration;
- 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;
- 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;
- identifying spurious respiration cycles associated with cardiac activity;
- and
- excluding the spurious respiration cycles when determining the estimated respiration characteristic.
A method, comprising:
- generating a signal indicative of respiration;
- 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;
- 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 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.
A method, comprising:
- generating a signal indicative of respiration;
- 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;
- 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 is a median value of respiration rates measured during the shorter time aperture and the estimated respiration characteristic of each longer time aperture is a median value of respiration rates measured during the longer time aperture.
Dependencies are inferred from the claim text.