Figure 2From: Near-infrared spectroscopy technique to evaluate the effects of red blood cell transfusion on tissue oxygenationRelationship between baseline muscle oxygen consumption and change in muscle oxygen consumption. x axis: baseline muscle oxygen consumption (NIR VO2; arbitrary units); y axis: difference in NIR VO2 after and before transfusion (ΔNIR VO2; arbitrary units). NIR VO2 was calculated as the product of the inverse value of the thenar tissue oxygen saturation (StO2) desaturation slope and the mean tissue hemoglobin index over the first minute of arterial occlusion. r2 = 0.48; P = 0.0015.Back to article page