Dextrose: D10 Framing
Objective: Treat symptomatic hypoglycemia with the concentration your protocol stocks. Prefer small titrated doses, often D10, over one large D50 dose. Recheck the glucose and mental status. Your protocol card sets the amount.
Why this matters
D50 is very concentrated sugar. If it leaks out of the vein, it can injure the tissue. It is also easy to raise the glucose too far. Many systems now prefer 10% dextrose, D10, in small titrated amounts until the patient improves. Use what your protocol stocks. This lesson is the approach, not a dose card. Your protocol card sets the amount. This site does not list grams.
- Check glucose early in altered mental status, seizure, and stroke-like deficits.
- The airway is protected before any oral glucose.
- IV dextrose: give it in small amounts, watch the IV, and recheck the number.
- If there is no IV and the protocol includes glucagon, give it. The patient still needs food after waking.
Clinical sequence
- Confirm hypoglycemia using your cutoff. A common teaching threshold is under 70 mg/dL when the patient is symptomatic. Your protocol decides the number. See diabetic emergencies.
- If the patient can protect the airway and swallow: give oral glucose.
- If not: give IV dextrose. Many systems prefer D10 in small amounts until the patient improves. Studies show D10 is easier to titrate than one large D50 dose. It causes less high glucose afterward, and less tissue injury if it leaks. Some bags still carry D50. If that is what you have, it can still injure tissue if it leaks. Use a working vein, preferably a larger one. Watch the IV.
- No IV: give intramuscular glucagon per protocol. The patient still needs carbohydrate when they can swallow. Glucagon can fail when the liver has no stored sugar, as in a starved patient or some patients with alcoholism.
- Recheck the glucose and mental status. Long-acting insulin and some oral diabetes pills, sulfonylureas, can drop the glucose again. Refusal rules belong to your protocol and to decision-making capacity. A waking patient is not an automatic release.
Pediatrics
Diluting D50 for a child is an easy math error. D10, or D25 where it is stocked, avoids that tenfold risk. Use a length-based tape and the weight-based sequence. This site does not list milliliters per kilogram.
Common errors
- Oral glucose paste in a patient who cannot protect the airway.
- D50 through an IV that has already leaked into the hand.
- Leaving a sulfonylurea low-glucose patient at home because they woke up.
Practice
One-minute check
With a partner, pick a path for each patient, including what you recheck: (1) talking, sweaty, glucose 42, able to swallow; (2) seizing, no IV yet; (3) you only have D50 and a small IV in the hand.
Related: Diabetic Emergencies, Altered mental status, Weight converter.
Sources & Further Study
Named guidelines for further study. They are not clinical orders and do not replace your protocol or medical direction.
- NASEMSO National Model EMS Clinical Guidelines (2022) — U.S. EMS model language. Your protocol still decides.
- ADA Standards of Care in Diabetes—2025 — Treat symptomatic hypoglycemia. Under 70 mg/dL is a common teaching threshold.
- Kiefer et al., Prehospital Emergency Care (2016): D10 for out-of-hospital hypoglycemia — D10 was feasible and effective, easier to titrate than one D50 dose, with less high glucose afterward.
- Your protocol sets the concentration, the volume, and the refusal rules. This site does not list grams.
Education only. Apply learning within your protocols and medical direction. This is not clinical care guidance.
Check Your Understanding
Questions drawn only from this lesson. After you check, the key is highlighted. Education practice — not a certification exam.