Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/7/2025

Hyperosmolar Hyperglycemic State Treatment Guidelines

Fluid Therapy Approach

  • The American Diabetes Association recommends beginning with isotonic saline (0.9% NaCl) at 15-20 ml/kg/h during the first hour to expand intravascular volume and restore renal perfusion in patients with Hyperosmolar Hyperglycemic State (HHS) 1, 2
  • HHS patients typically have more severe dehydration than DKA patients, with average total water deficits of approximately 9 liters versus 6 liters in DKA 3, 4
  • After hemodynamic stabilization, transition to 0.45% NaCl at 4-14 ml/kg/h if the corrected serum sodium is normal or elevated, as recommended by the American Diabetes Association 1, 2

Electrolyte Management

  • The American Diabetes Association recommends adding 20-30 mEq/L potassium (2/3 KCl and 1/3 KPO4) to the infusion once renal function is assured 1, 2

Monitoring and Safety Considerations

  • The induced change in serum osmolality should not exceed 3 mOsm/kg/h to prevent neurological complications, according to the American Diabetes Association 1, 2
  • Careful monitoring of serum osmolality is essential, especially in patients with renal or cardiac compromise, as stated by the American Diabetes Association 5

Special Populations

  • In pediatric patients (<20 years), initial fluid therapy should be with isotonic saline (0.9% NaCl) at 10-20 ml/kg/h for the first hour, as recommended by the American Diabetes Association 4
  • Initial reexpansion in pediatric patients should not exceed 50 ml/kg over the first 4 hours to reduce risk of cerebral edema, according to the American Diabetes Association 4

Important Considerations

  • Fluid replacement should correct estimated deficits within the first 24 hours, as recommended by the American Diabetes Association 1, 5
  • Avoid excessive fluid administration in patients with cardiac or renal compromise to prevent fluid overload, according to the American Diabetes Association 5
  • Failure to correct serum sodium for hyperglycemia may lead to inappropriate fluid selection, as stated by the American Diabetes Association 5
  • Careful monitoring of potassium levels is crucial as insulin therapy can precipitate dangerous hypokalemia, according to the American Diabetes Association 5