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Composition of dialysate fluid

Authoring team

The composition of dialysis fluid used varies according to clinical need. A standard solution aims to allow a net outflow of potassium from the blood, at a rate below that to create hypokalaemia, and a net inflow of calcium. The difficulties of producing bicarbonate containing dialysate fluid have largely been overcome so that it is no longer necessary to use acetate instead.

A typical composition would be:

mmol / l

  • sodium 140.0
  • potassium 1.0
  • calcium 1.25
  • bicarbonate 34.0
  • magnesium 0.5
  • chloride 107.5
  • glucose 5.5

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