Hypertonic Saline in Pediatric DKA with Altered Mental Status

Initial Fluid Management for Pediatric DKA

The American Diabetes Association recommends isotonic saline (0.9% NaCl) at 10-20 ml/kg/h for the first hour in pediatric DKA management, regardless of mental status at presentation, to prioritize vascular volume expansion and gradual correction of osmolality 1, 3
Initial reexpansion should not exceed 50 ml/kg over the first 4 hours in severely dehydrated patients to minimize the risk of cerebral edema 1, 3
The goal is to achieve a decline in serum osmolality not exceeding 3 mOsm/kg/h to minimize cerebral edema risk 1, 2, 4

Hypertonic saline (3% NaCl) is reserved exclusively for treatment of clinically diagnosed cerebral edema, which occurs in 0.7-1.0% of pediatric DKA cases, and is characterized by sudden deterioration in level of consciousness, seizures, incontinence, pupillary changes, bradycardia, and respiratory depression 2, 4

The American Academy of Pediatrics and the American Diabetes Association recommend isotonic saline (0.9% NaCl) at 10-20 ml/kg/h for initial resuscitation, followed by 0.9% NaCl at 1.5 times 24-hour maintenance requirements for continued fluid therapy, with careful monitoring of osmolality decline and addition of potassium once renal function is assured 1, 3
If cerebral edema develops, immediate administration of hyperosmolar therapy, preferably mannitol, is recommended without waiting for confirmatory imaging, as mortality is high and progression is rapid 2