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Diabetic Ketoacidosis (DKA) — Transitioning to Subcutaneous Insulin — Clinical Pathway: Emergency Department, ICU and Inpatient

Diabetic Ketoacidosis (DKA) Clinical Pathway — Emergency Department, ICU and Inpatient

Transitioning to Subcutaneous Insulin when DKA is Resolved

Definition of Resolution of DKA
  • MS, VS improved, tolerating sips
  • HCO3 > 15 mmol/L or
  • HCO3 < 15 and BHOB < 2 mmol/L
  • Anion gap < 10

Steps to Transition to Subcutaneous Insulin

  • Obtain dose from Endocrine
  • Review if Lantus dose has already been given
  • Administer the first rapid-acting (aspart) subcutaneous insulin dose
  • Allow the child to start eating
  • Wait 20 mins, then stop the insulin infusion and IVF if PO intake adequate

Insulin Dosing

  • Review child-specific dosing with Endocrine
    • New-onset DM: doses based on weight
    • Known DM: resume home insulin dose
  • Most children are not transitioned directly back to their insulin pump

Basal-bolus Insulin Regimen

Lantus
(Basal)
  • Long-acting or basal insulin that lasts 24 hr
  • Crucial for preventing ketosis and the development of DKA
  • Administer before discontinuation of insulin infusion
    • Otherwise, likelihood of recurrent DKA is high
  • Given 1-2 times daily
Aspart
(Bolus)
  • Rapid-acting bolus, used to cover carbohydrates eaten and correct high blood sugars and ketones
  • Insulin to carbohydrate ratio
    • Amount of insulin that covers carbohydrates eaten
    • e.g., 1:6g = 1 unit is administered for every 6 grams of carbohydrates
  • Insulin sensitivity factor (Correction factor)
    • Amount in mg/dL that blood glucose is lowered by 1 unit of insulin
    • e.g., 1:50 with a target of 100 = 1 unit will lower the blood sugar 50 points to a target of 100
  • Ketone dose
    • Amount of insulin administered every 2 hrs when ketones are present
  • Ketone Dose, Insulin Sensitivity Factor, and Correction Bolus Calculation
Diabetic Ketosis without Acidosis
BOHB ≥ 1
Routine Diabetic Care
BOHB < 1
  • Blood glucose checks
    • Before meals, bedtime and 2 a.m.
  • POC BOHB or urine ketones
    • For glucose > 300 mg/dL
  • Administer aspart insulin
    • Mealtimes to cover carbohydrates, correct high blood sugar
    • Do not administer aspart insulin more frequently than every 3-4 hrs
  • Administer Lantus

 

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