There are many more therapies than just oxygen that hospitalized patients receive. Lots of monitoring of e.g., blood values that indicate stress on one organ o

There are many more therapies than just oxygen that hospitalized patients receive. Lots of monitoring of e.g., blood values that indicate stress on one organ or another, or danger of crisis due to many different processes. Drug therapy and supportive treatments are varied in response to those. It's not as simple as "welcome to Wendy's, would you like the oxygen today, or can we supersize you to a ventilator?"