Table 1 Summary of selected clinical and clinicopathologic variables of horses with naturally occuring gastrointestinal disease within treatment groups prior to and following colloid administration. Results listed as mean and [95% Confidence Interval]. Significant differences (P<0.05) were not detected between treatment groups following randomization.

Age (years)

8

[3.8 – 11.3]

12

[7.2 – 16.8]

P=0.118

Weight (kg)

496

[441 – 551]

518

[433 – 604]

P=0.627

Pre-treatment albumin

[25-35 g/L]

18

[16 – 19]

19

[16 – 23]

P=0.419

Pre-treatment total protein

[50-78 g/L]

42

[39 – 46]

41

[38 – 44]

P=0.645

Pre-treatment COP [18-22 mmHg]

11.0

[9.4 – 12.5]

11.0

[8.6 – 13.5]

P=0.945

Post-treatment COP

[18-22 mmHg]

13.8

[12.2 – 15.4]

12.9

[10.4 – 15.4]

P=0.512

Pre-treatment venous pH

[7.38 – 7.44]

7.38

[7.33 – 7.44]

7.41

[7.38 – 7.43]

P=0.442

Post-treatment venous pH

[7.38 – 7.44]

7.38

[7.32 – 7.43]

7.40

[7.37 – 7.43]

P=0.435

Pre-treatment venous sodium

[130–142 mmol/L]

132

[127 – 137]

136

[134 – 138]

P=0.119

Post-treatment venous sodium

[130–142 mmol/L]

134

[128 – 140]

136

[135 – 138]

P=0.383

Pre-treatment chloride

[96–110 mmol/L]

99

[96 – 102]

102

[100 – 105]

P=0.098

Post-treatment chloride

[96–110 mmol/L]

102

[98 – 105]

104

[101 – 107]

P=0.344

Pre-treatment bicarbonate

[22–30 mmol/L]

24

[21 – 28]

26

[23 – 30]

P=0.322

Post-treatment bicarbonate

[22–30 mmol/L]

23

[19 – 28]

27

[24 – 30]

P=0.155

Pre-treatment anion gap

[10–17 mmol/L]

12

[10 – 14]

10

[9 – 12]

P=0.200

Post-treatment anion gap

[10–17 mmol/L]

11

[9 – 13]

9

[8 – 11]

P=0.114

Pre-treatment venous lactate

[1.1 – 1.8 mmol/L]

2.3

[1.1 – 3.5]

1.6

[1.0 – 2.1]

P=0.204

Post-treatment venous lactate

[1.1 – 1.8 mmol/L]

2.1

[1.0 – 3.3]

1.5

[1.2 – 1.9]

P=0.275