Description

Increased body fluid loss following surgery, drainage or environmental factors can impact fluid and electrolyte balance.


 

loss for electrolyte in mmol/L =

= (volume of fluid loss in liters) * (concentration of electrolyte in mmol/L)

 

where:

• For bicarbonate, chloride, potassium and sodium, mEq/L = mmol/L

 

For the most accurate determinations, the fluid volume and composition should be accurately measured. 4 different tables of electrolyte composition were reviewed for the table below and all gave different values.

 

Fluid

Electrolyte

Range in mmol/L

bile

bicarbonate

35

 

chloride

89 - 180

 

potassium

3 - 12

 

sodium

131 - 164

CSF

bicarbonate

25

 

chloride

122 - 128

 

potassium

2.5 – 4.5

 

sodium

130 - 150

diarrheal stool

bicarbonate

30 - 50

 

chloride

30 - 120

 

potassium

10 - 40

 

sodium

20 - 160

duodenum

bicarbonate

4 - 21

 

chloride

104

 

potassium

5

 

sodium

140

gastric juice, with parietal cell secretion (acidic)

bicarbonate

0

 

chloride

8 - 160

 

potassium

5 - 15

 

sodium

20 - 70

gastric juice, without parietal cell secretion (neutral to weakly alkaline)

bicarbonate

25 - 40

 

chloride

80 - 120

 

potassium

5 - 15

 

sodium

70 - 150

ileum

bicarbonate

30

 

chloride

43 - 137

 

potassium

2 - 8

 

sodium

80 - 150

pancreatic fluid

bicarbonate

66 - 127

 

chloride

54 - 95

 

potassium

3 - 7

 

sodium

113 - 185

saliva

bicarbonate

2 - 13

 

chloride

10 - 40

 

potassium

15 - 40

 

sodium

10 - 25

sweat

bicarbonate

0

 

chloride

5 - 70

 

potassium

5 - 15

 

sodium

5 - 80

transudates

bicarbonate

24 - 29

 

chloride

90 - 110

 

potassium

2.5 - 5

 

sodium

130 - 145

 


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