Fig. 5From: Clinical classification of tissue perfusion based on the central venous oxygen saturation and the peripheral perfusion indexMortality at day 30 according to stratification by severity of impairment of peripheral perfusion index (PI) after normalization of central venous oxygen saturation (ScvO2) (≥70 %) at 8 h (T8). *P <0.05; ns not significant. PI ≥1.4 (normal PI, n = 105); 0.6 < PI <1.4 (PI mild impairment n = 37); PI ≤0.6 (PI critical impairment, n = 25)Back to article page