D10 Should Be Administered in Water (D10W)
D10 (10% dextrose) should be prepared in water as D10W (10% dextrose in water), not in saline solutions, for the treatment of hypoglycemia and maintenance fluid therapy in pediatric patients. 1
Clinical Context and Rationale
The evidence consistently demonstrates that D10W is the standard formulation across multiple clinical scenarios:
For Acute Hypoglycemia Treatment
In pediatric emergencies, D10W is specifically recommended as the dextrose solution of choice. The 2008 Pediatrics guidelines explicitly state: "IV: 200 mg/kg as D10W only" for hyperkalemia treatment, and recommend "Constant infusion of D10W-containing IV fluids with appropriate maintenance electrolytes" 1. The water base allows for appropriate osmolarity and prevents excessive sodium administration when treating hypoglycemia.
For dosing calculations:
- D10W: 200 mg/kg = 2 mL/kg for bolus treatment
- For maintenance: 0.5–1.0 g/kg = 5–10 mL/kg of D10W 1
For Adrenal Crisis Management
When treating adrenal insufficiency with concurrent hypoglycemia, the 2016 Endocrine Society guidelines recommend "5–10 mL/kg of D10W for children <12 years old" as an alternative to D25W 2. This water-based formulation is preferred because it provides adequate glucose without the vein irritation associated with higher concentrations.
For Maintenance Fluid Therapy
D10W with appropriate electrolytes is recommended for continuous infusion at a rate of 100 mL/kg per 24 hours (7 mg/kg per minute) to maintain normoglycemia 1. The 2018 AAP guidelines on maintenance IV fluids support isotonic solutions with dextrose, though they emphasize adding appropriate sodium and potassium to the base solution 3.
Important Clinical Considerations
Why Water, Not Saline?
- Osmolarity control: D10W provides appropriate osmolarity (505 mOsm/L) without excessive sodium load
- Flexibility for electrolyte addition: Starting with water allows clinicians to add appropriate amounts of sodium and potassium based on patient needs
- Vein compatibility: D10W is less irritating to peripheral veins than higher concentrations
When to Add Electrolytes
For maintenance therapy, D10W should be combined with appropriate maintenance electrolytes (typically sodium and potassium chloride) 1. The base solution is D10W, but electrolytes must be added for prolonged infusions.
For specific situations like adrenal crisis, consider D10NS (D10 in normal saline) as a fluid bolus option 1, but this is distinct from the standard D10W used for hypoglycemia treatment.
Dosing Adjustments
- Older children may require substantially lower doses than the standard 7 mg/kg per minute rate 1
- Titrate to achieve normoglycemia rather than using fixed rates, as hyperglycemia has its own adverse CNS effects 1
- Monitor glucose, sodium, and potassium levels carefully during infusion 1
Common Pitfalls to Avoid
- Do not use D10 in saline for acute hypoglycemia treatment - the standard is D10W
- Do not forget to add maintenance electrolytes for continuous infusions beyond acute treatment
- Avoid D50W in peripheral veins - it is highly irritating; dilution to D25W or preferably D10W is desirable 1
- Do not assume one concentration fits all - titrate based on patient response and age
Special Population: Neonates and Infants
For neonatal hypoglycemia requiring IV dextrose, D10W remains the standard, though recent evidence shows these patients experience a high burden of glucose measurements (median 29 measurements per hospitalization) 4. This reinforces the importance of appropriate initial concentration selection to minimize treatment duration.