Do You Need a Mixed Venetian O Two?

In the cath lab, you can measure a whole bunch of oxygen saturations. You want to find an unperturbed blood sample that is going to give you an accurate assessment,. or quadification, of the oxygen content in the venus system. So then we have an arterial sat and a mixed venus otuset to get our estimated fick. And i think alwaysa important thing to remember, because i fee like i always hear these opinions about fick,you have to use ick, you have to ue thermodilution.