Table 4

Tissue hemoglobin oxygen saturation parameters measured at day 1

Parameter

Total group (n = 43)

Survivors (n = 28)

Nonsurvivors (n = 15)

P-value

SpO₂ (%)

99 (98 to 100)

99 (97 to 100)

100 (99 to 100)

0.18

StO₂ (%)

82 (75 to 88)

82 (75 to 87)

82 (73 to 92)

0.86

SvO₂ (%)

75 (68 to 83)

76 (70 to 84)

73 (68 to 77)

0.22

ΔSpO₂ - StO₂ (%)

17 (9 to 24)

16 (9 to 22)

18 (7.5 to 25)

0.96

ΔStO₂ - SvO₂ (%)

5 (-7 to 19)

4.5 (-3 to 18.1)

10 (-10.3 to 20.5)

0.61

ΔStO₂ - SvO₂/StO₂

0.06 (-0.1 to 0.2)

0.05 (-0.04 to 0.2)

0.14 (-0.1 to 0.2)

0.69

ΔStO₂ - SvO₂/SvO₂

0.08 (-0.03 to 0.3)

0.05 (-0.03 to 0.3)

0.18 (0 to 0.3)

0.50

Occlusion slope (%/second)

-0.31 (-0.47 to -0.24)

-0.35 (-0.54 to -0.24)

-0.3 (-0.37 to -0.25)

0.36

Reperfusion slope (%/second)

2.79 (1.75 to 4.32)

3.98 (2.25 to 6.04)

1.88 (1.56 to 2.76)

0.003

Tissue hemoglobin oxygen saturation (StO₂) parameters measured on day 1 in patients with septic shock (total group), in survivors and in nonsurvivors. Data are presented as median (25th to 75th percentiles). SpO₂, pulse oxymetry; SvO₂, central venous oxygen saturation (included mixed venous oxygen saturation and superior vena cava oxygen saturation + 5%); Δ, gradient between stated parameters.

Payen et al. Critical Care 2009 13(Suppl 5):S6   doi:10.1186/cc8004