Hartmann's Solution

Hartmann's solution or Compound Sodium Lactate is a solution that is isotonic with blood and intended for intravenous administration.

Hartmann's solution is abbreviated as "CSL". It is very similar--though not identical to--Lactated Ringer's solution, the ionic concentrations of which differ.

Overview
One litre of Hartmann's Solution contains:
 * 131 mEq of sodium ion = 131 mmol/L.
 * 111 mEq of chloride ion = 111 mmol/L.
 * 29 mEq of lactate = 29 mmol/L.
 * 5 mEq of potassium ion = 5 mmol/L.
 * 2 mEq of calcium ion = 2 mmol/L.

Generally, the sodium, chloride, potassium and lactate come from NaCl (sodium chloride), NaC3H5O3 (sodium lactate), CaCl2 (calcium chloride), and KCl (potassium chloride).

Contraindications
Hartmann's solution is said to be contraindicated in patients with diabetes mellitus, as one of the isomers of lactate is gluconeogenic.