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Table 3 Main metabolic and electrolyte parameters throughout RCA-CVVH days.

From: Regional citrate anticoagulation in cardiac surgery patients at high risk of bleeding: a continuous veno-venous hemofiltration protocol with a low concentration citrate solution

 

Days on RCA

 

1

2

3

4

Last day

Systemic Ca++ (mmol/l)

1.2 (1.09-1.36)

1.2 (1.14-1.25)

1.19 (1.15-1.24)

1.16 (1.12-1.26)

1.19 (1.13-1.24)

Circuit Ca++ (mmol/l)

0.39 (0.33-0.43)

0.37 (0.31-0.4)

0.32 (0.28-0.37)**

0.35 (0.31-0.39)

0.34 (0.32-0.39)

Systemic sodium (mmol/l)

136 (134-139.2)

135 (133-138)

134 (132-138)*

134 (131.7-136)*

135 (134-136)

Estimated citrate load (mmol/hour)

11.3 (10.1-12.4)

11.3 (10.2-12.3)

11.3 (10.1-12.5)

11.3 (10.2-12.5)

10.7 (10.1-11.9)

Calcium Ratio

1.88 (1.78-2.04)

1.96 (1.87-2.04)

1.96 (1.84-2.1)

1.92 (1.82-2.1)

2 (1.89-2.08)

pH (units)

7.4 (7.35-7.43)

7.4 (7.36-7.42)

7.4 (7.34-7.43)

7.4 (7.35-7.43)

7.41 (7.37-7.43)

Systemic bicarbonates (mmol/l)

22.9 (20.6-23.9)

22 (20.9-22.8)

22 (20.7-23.2)

21.4 (20.2-23.3)

22 (20.4-23.2)

Base excess

-3 (-4.7 to -1.1)

-3.2 (-3.8 to -2)

-3.1 (-4.1 to -2)

-3 (-3.5 to -1.6)

-2.5 (-4 to -1)

Systemic lactate (mmol/l)

1.3 (1-1.8)

1.2 (0.9-1.5)

1.05 (0.8-1.25)

1 (0.9-1.3)

1.1 (0.7-1.65)

  1. Data are expressed as median (interquartile range). All points of considered parameters were not significant, except for time day 3 versus day 1 of circuit Ca++ (** P < 0.02) and for time day 3 and 4 versus day 1 of systemic sodium (* P < 0.05). RCA-CVVH, regional citrate anticoagulation-continuous veno-venous hemofiltration.