Patent ID: 8475388

Claim:
A method of operating a medical device, comprising: sensing respiration of a patient and generating a respiration signal; determining respiration signal characteristics from the respiration signal; comparing the respiration characteristics to respiration threshold values; sensing non-respiration related artifacts and generating an artifact signal; sensing two or more sleep related signals; comparing at least one of the sensed sleep related signals to a first sleep threshold, the first sleep threshold adjusted by another of the one or more sensed sleep related signals; determining a sleep status of the patient based at least in part on the sleep threshold comparison; detecting disordered breathing including discriminating between apnea, hypopnea, and episodes of mixed apnea and hypopnea, using a processor, based on the sleep status and comparing the respiration signal characteristics to the respiration threshold values; reducing erroneous detection of the disordered breathing based on the artifact signal; and storing historical data related to the disordered breathing in memory of the medical device.