Composition of Crystalloid Solutions

These are some useful information on crystalloids and their contents. At least you know what you’re giving instead of giving them blindly.

Normal saline (0.9% saline)

  • 154 mmol/L of Na
  • 154 mmol/L of Cl
  • Osmolalilty: 308 mosm/L
  • pH 5.0
  • Potential problems: hypernatraemia, hyperchloraemic acidosis

Half normal saline (0.45% saline)

  • 77mmol/L of Na
  • 77mmol/L of Cl
  • pH 5.0

D5W (5% dextrose)

  • 278 mmol/L of glucose
  • pH 4.0

Hartmann’s solution (Sodium lactate)

  • 131 mmol/L of Na
  • 111 mmol/L of Cl
  • 29 mmol/L of lactate (later converted to bicarbonate in liver…)
  • 5 mmol/L of K
  • 2 mmol/L of Ca
  • Osmolality: 279 mosm/L
  • pH 6.5
  • Potential problem: hyperkalaemia

Ringer’s lactate (pretty similar to Hartmann’s)

  • 130 mmol/L of Na
  • 109 mmol/L of Cl
  • 28 mmol/L of lactate
  • 4 mmol/L of K
  • 3 mmol/L of Ca

Fluid Therapy for the Needy

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