Determination of absolute tissue oxygen saturation and relative tissue oxygen saturation

摘要

The oximeter probe is user configurable to be in absolute reporting mode and relative reporting mode for measurements. Absolute and relative mode measurements include absolute oxygen saturation, relative oxygen saturation, absolute hemoglobin content, relative hemoglobin content, absolute blood volume, relative blood volume. Relative and absolute modes to determine and report relative or absolute hemoglobin content or relative or absolute blood volume of an individual patient affect blood flow but not oxygen saturation in tissues such as skin Not useful in determining the efficacy of drugs such as epinephrine administered. The oximeter probe, in these relative modes, indicates the efficacy of the administered drug as a relative hemoglobin content or a reported value of relative blood volume decline or elevation.