Determination of absolute and relative tissue oxygen saturation

摘要

The oxygen meter probe is configurable by the user to be in an absolute reporting mode and a relative reporting mode for the measured value. Specific values for absolute and relative modes include absolute oxygen saturation, relative oxygen saturation, absolute hemoglobin content, relative hemoglobin content, absolute blood volume, and relative blood volume. Relative and absolute modes for determining and reporting the relative or absolute hemoglobin content, or relative or absolute blood volume, for an individual patient are those that affect blood flow but do not affect the tissue, such as oxygen saturation in the skin , Such as determining the efficacy of epinephrine. The oxygen meter probe in these relative modes displays the efficacy of the administered drug as a reported value for relative hemoglobin content or relative blood volume decline or elevation.