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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Shock. 2016 Nov;46(5):527–530. doi: 10.1097/SHK.0000000000000644

Fig. 3. Femoral artery SaO2 ± standard deviation versus stepwise decrease in FiO2 (n = 6 animals).

Fig. 3

Measurements were made by conventional co-oximetry on blood taken from femoral artery catheters (solid bars) or measured by PA imaging (hashed bars) on a 0.25 mm2 area over the femoral artery. Asterisks indicate significant differences in SaO2 measured by PA imaging at 1.0 FiO2 and values for SaO2 measured at lower FiO2.