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Table 1 Electrolytes and strong ion difference (SID) of fluid products commonly used in the intensive care unit (ICU)

From: Management of acute metabolic acidosis in the ICU: sodium bicarbonate and renal replacement therapy

Ion

Concentration (mEq/L)

Plasma

0.9% NaCl

Ringer’s lactate

Ringer’s acetate

5% albumin

Plasma-Lyte 148

8.4% NaHCO3

Na+

140

154

131

130

148

140

1000

K+

5

0

5

4

0

5

0

Cl−

100

154

111

109

131

98

0

Ca2+

2.2

0

2

3

0

0

0

Mg2+

1

0

1

0

0

1.5

0

HCO3−

24

0

0

0

0

0

1000

Lactate−

1

0

29

0

0

0

0

Acetate−

0

0

0

28

0

27

0

Gluconate

0

0

0

0

0

23

0

SID

47.2

0

28

28

17

48.5

1000

  1. Ions in bold font contribute to SID