Demonstrated hypoglycaemia where oral glucose administration is inappropriate in:
Altered conscious state in known diabetic or of otherwise unknown cause where blood glucose level is below 4 mmol/L.
Cardiac arrest, only if hypoglycaemia is suspected as a contributory cause of the arrest, not an early indication.
Contraindications
Not to be used if there is no patent IV access
Precautions / Notes
Patients should ideally be cannulated with a large gauge cannula into a large vein, with patency confirmed with a free flowing bolus (>20 mL) of 0.9% normal saline, before administering glucose 10% using a 20 mL syringe via the injection port, titrated to effect. Administration via an IO should utilise a 20 mL syringe and a three way tap.
High concentration of IV glucose may aggravate dehydration due to its hypertonicity whereby it draws water from the cells.
IV glucose is corrosive and IV patency must be ensured before administration.
Careful titration of glucose in head injured patients is vital as glucose leaking into CNS tissue will aggravate the injury, resulting in cerebral oedema.
Monitor blood glucose level carefully; beware of drop in level again after the patient has recovered.
Even if fully recovered, patients should be encouraged to be transported to a medical facility to ensure effective follow up and review.
IO administration is only as a last resort after all other avenues have been exhausted and the patient needs lifesaving glucose.
Do not wait on scene for glucose to take effect.
Note that repeat doses of Glucose 10% (Intravenous) may need to be repeated to achieve normoglycaemia.
Management
Adult:
15 g (150 mL) IV
If BGL < 4 mmol/L after 5-10 minutes, give 10 g (100 mL) IV titrating to effect
Paediatric:
2 mL/kg (0.20g/kg or 200mg/kg) up to 15 g (150 mL) IV/IO
If BGL < 4 mmol/L after 5-10 minutes, give 0.2 g/kg IV/IO titrating to effect
Newborn:
2 mL/kg (0.20 g/kg or 200 mg/kg)
Repeat once only, if clinically indicated (BGL <2 mmol/L)