Patent ID: 8496596

Claim:
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.