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Table 3 Sidestream Dark Field-derived microcirculatory variables before and 1 hr after red blood cell transfusion

From: The effect of red blood cell transfusion on tissue oxygenation and microcirculation in severe septic patients

Subgroup

Baseline

  

After transfusion

 

Measurement

Vessel size

n

Mean (SD)

Mean (SD)

p

Total vessel density (mm/mm2)

Small

11

22.4 (5.9)

21.5 (5.5)

0.36

Total vessel density (mm/mm2)

Large

11

3.4 (1.3)

3.9 (1)

0.2

Total vessel density (mm/mm2)

All

11

25.7 (6.4)

25.4 (6)

0.73

Perfused vessel density (mm/mm2)

Small

11

9.5 (4.8)

9.4 (4.8)

0.91

Perfused vessel density (mm/mm2)

Large

11

3 (1.5)

3.7 (1.2)

0.09

Perfused vessel density (mm/mm2)

All

11

12.5 (5.4)

13.3 (4.7)

0.53

Proportion of perfused vessels (%)

Small

11

37.6 (21.5)

38.2 (21.8)

0.85

Proportion of perfused vessels (%)

Large

11

100

100

1

Proportion of perfused vessels (%)

All

11

51.6 (23.8)

53.9 (20.9)

0.45

De Backer score (n/mm)

 

11

14.7 (3.8)

14.8 (3.5)

0.91

Microvascular Flow Index

Small

11

1.6 (0.7)

1.6 (0.7)

0.76

Microvascular flow index

All

11

2.3 (0.4)

2.4 (0.3)

0.3

Heterogeneity index (%)

 

11

0.3 (0.2)

0.4 (0.3)

0.19