CPC A61B 5/1116 (2013.01) [A61B 5/14503 (2013.01); A61B 5/14546 (2013.01); A61B 5/1118 (2013.01); A61B 5/14532 (2013.01); A61B 2562/0219 (2013.01); A61N 1/056 (2013.01); A61N 1/365 (2013.01); A61N 1/368 (2013.01); A61N 1/3702 (2013.01)] | 2 Claims |
1. A method of operating a medical device system comprising:
measuring position data using an accelerometer;
making a preliminary posture determination of a patient using the position data measured by the accelerometer;
when the preliminary posture determination does not indicate a recumbent posture, then:,
measuring chemical data using an optical chemical sensor; and
normalizing the chemical data by correcting the chemical data in a manner that is proportional to the position data indicated by the accelerometer; and
making a final posture determination of the patient using the position data measured by the accelerometer and the normalized chemical data measured by the optical chemical sensor;
wherein the accelerometer and the optical chemical sensor are disposed within a housing of an implantable medical device.
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