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Table 5 Related variables and outcome in different groups according to stratification by severity of impairment of PI at T8 after normalization of ScvO2 (≥70 %)

From: Clinical classification of tissue perfusion based on the central venous oxygen saturation and the peripheral perfusion index

 

Critical

Mild

Normal

 

PI ≤0.6

0.6 < PI <1.4

PI ≥1.4

n = 25

n = 37

n = 105

T0

CVP, mmHg

9 ± 4

9 ± 3

10 ± 3

 

MAP

94 ± 20

90 ± 16

91 ± 17

 

ScvO2, %

71 ± 13

74 ± 11

77 ± 9

 

P(v-a) CO2, mmHg

8 ± 4**

6 ± 4

6 ± 3

 

Lactate, mmol/L

3.2 ± 3.1

2.6 ± 1.8

2.8 ± 2.2

 

PI

0.6 ± 0.6*,**

0.9 ± 0.6**

1.8 ± 1.3

T8

CVP, mmHg

9 ± 4

9 ± 3

8 ± 3

 

MAP

87 ± 15

88 ± 10

86 ± 13

 

ScvO2, %

80 ± 4

79 ± 6

80 ± 6

 

P(v-a) CO2, mmHg

7 ± 5

5 ± 3

5 ± 3

 

Lactate, mmol/L

2.9 ± 3.2**

1.8 ± 1.4

1.5 ± 1.2

 

PI

0.4 ± 0.2*,**

1 ± 0.2**

3.1 ± 1.2

Base APACHE II

20 (12 to 29)*

11 (8 to 21)

12 (7 to 16)

Base SOFA

9 (7 to 10)**

7 (5 to 11)

7 (4 to 9)

Mortality at day 30, n/total (%)

9/25 (35 %)*,**

4/37 (11 %)

5/105 (5 %)

8-h LC, %

14 (−45 to 38)**

25 (−2.5 to 47)

43 (0 to 60)

  1. Results are presented as mean ± SD or median (IQR) unless stated otherwise
  2. APACHE acute physiology and chronic health evaluation, SOFA sequential organ failure assessment score, CVP central venous pressure, MAP mean arterial pressure, ScvO2 central venous oxygen saturation, P(v-a) CO2 veno-arterial CO2 tension difference, PI peripheral perfusion index, LC lactate clearance
  3. *P <0.05 for comparison to mild-moderate
  4. **p <0.05 compared to normal
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Critical Care

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