Patent ID: 7704215
Filing Date: 2010-04-27
Classification: A61B,G16H

Abstract:
1. A method comprising: detecting a respiration signal from a subject; determining respiration rate or interval measurements from the respiration signal; classifying the respiration rate or interval measurements into at least one class of respiration rate or interval measurements, and associating a specified time of day with at least one class; trending at least one of: (1) time of day of occurrence information about the classified respiration rate or interval measurements, or (2) respiration rate or interval measurement information repeatedly, over a period of multiple days, during a specified one of a daytime subperiod or a nighttime subperiod, wherein the specified one of the daytime subperiod or the nighttime subperiod corresponds to a like time of day during each of the multiple days; and providing a heart failure decompensation indication using the trended information.