Patent ID: 8790274

Claim:
A method of simultaneously monitoring body position and respiration of a subject, comprising the steps of: (i) monitoring a subject orientation by data acquisition circuitry, (ii) monitoring an end-expiratory value of an axial dimension of a distance Xi between a first location and a second location for said subject orientation by said data acquisition circuitry, (iii) assigning a body position for said end-expiratory value for said subject orientation during a calibration maneuver in which said subject is asked to assume varied body positions by a processor, (iv) determining when said subject orientation changes body position by said processor, wherein a detector is used for measuring transient position-induced voltage spikes provided by said processor, (v) determining, an end-expiratory value that is stable following said subject orientation change in body position and assigning a new body position to the stable end-expiratory value by said processor, and (vi) providing said new body position to a data output interface communicating with varied output devices by said processor.