Assertion: oxygen's pressure | /r/HasProperty | measured
Facets:
value: from a mixed venous blood sample
type: OTHER
value: in essence
type: OTHER
value: of
type: OTHER
Source sentences:
text: Atmospheric pressure is the total weight of the air above unit area at the point where the pressure is measured.
text: Partial pressure of any gas is a measurement, in essence, of how much gas there is in any environment.
text: Note that both the partial pressure of oxygen and the saturation must be measured from a mixed venous blood sample.