Figure 7.

Arterial oxygen tension (P_aO₂) values atpulse oximetry O₂ saturation (S_pO₂) value of90, 92, 94, and 95%. The inspired O₂ concentration(F_iO₂) was adjusted until the desired steady-stateS_pO₂ value was achieved. The solid horizontal linerepresents the mean P_aO₂ value obtained for eachS_pO₂ target. The closed and open circles represent valuesobtained in black and white patients, respectively. In whitepatients, anS_pO₂ target of 92% resulted in a satisfactory level ofoxygenation, whereas a higher S_pO₂ target, 95%, wasrequired in black patients. Published with permission [19].