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Table 4 Sublingual microvascular flow for small vessels (< 20 μm) during eight hour study period

From: Haemodynamic optimisation improves tissue microvascular flow and oxygenation after major surgery: a randomised controlled trial

  

Hour 0

Hour 2

Hour 4

Hour 6

Hour 8

Microvascular Flow Index

CVP

2.5 (0.3)

2.5 (0.7)

2.6 (0.4)

2.6 (0.4)

2.5 (0.5)

 

SV

2.5 (0.4)

2.5 (0.5)

2.6 (0.4)

2.7 (0.3)

2.6 (0.4)

 

† SV & DPX

2.5 (0.4)

2.4 (0.5)

2.5 (0.4)

2.7 (0.3)

2.5 (0.4)

Perfused vessel density

(mm -1 )

‡ CVP

6.1 (2.4)

6.1 (1.7)

5.8 (2.0)

5.8 (1.9)

5.3 (1.8)

 

SV

5.8 (2.5)

5.7 (2.6)

5.7 (1.9)

5.7 (1.9)

6.2 (3.0)

 

† SV & DPX

5.8 (2.4)

5.5 (2.4)

5.9 (2.8)

6.2 (1.8)

6.3 (3.0)

Proportion of perfused vessels

CVP

0.83 (0.14)

0.83 (0.12)

0.81 (0.14)

0.82 (0.18)

0.81 (0.18)

 

SV

0.80 (0.15)

0.80 (0.21)

0.82 (0.17)

0.84 (0.13)

0.80 (0.19)

 

SV & DPX

0.81 (0.16)

0.77 (0.14)

0.81 (0.15)

0.85 (0.12)

0.87 (0.17)

Heterogeneity index

CVP

0.39

(0.23-0.51)

0.23

(0.12-0.41)

0.25

(0.17-0.48)

0.28

(0.16-0.38)

0.25

(0.10-0.54)

 

SV

0.23

(0.10-0.43)

0.20

(0.07-0.31)

0.22

(0.04-0.41)

0.19

(0.06-0.31)

0.22

(0.08-0.46)

 

† SV & DPX

0.27

(0.18-0.40)

0.20

(0.14-0.44)

0.18

(0-0.27)

0.13

(0.08-0.27)

0.17

(0-0.38)

  1. Data presented as mean (standard deviation) or median (interquartile range). Significant changes over time signified by † (P < 0.05), ‡ (P < 0.01). CVP, central venous pressure; DPX, dopexamine; SV, stroke volume.