Patent ID: 8897848
Filing Date: 2014-11-25
Classification: A61B

Abstract:
1. A method for determining a venous oxygen saturation value (SvO2) of a subject, comprising the steps of: sensing a plurality of tissue regions on a subject using a NIRS oximeter adapted to determine a tissue oxygen saturation value (StO2) for each region, each region independent of the other regions and each region sensed using a NIRS oximeter sensor specific to that region, and each sensor having at least one light source and at least one light detector, and determining a StO2 value for that region; assigning a coefficient to each region, each of which coefficients reflects a portion of the StO2 value for the region attributable to a composite venous blood return representative of the tissue regions measured; and determining a composite SvO2 value for the subject using the StO2 region values and the respective coefficients.