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Dka aout protocol

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DKA diabetic ketoacidosis protocol diagnosis management treatment

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DKA diabetic ketoacidosis management protocol flowchart

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Assuming you mean DKA protocol (diabetic ketoacidosis), here is a concise adult ER/ICU protocol.

1) Confirm DKA

Diagnosis is typically:
  • Glucose >250 mg/dL (can be lower in euglycemic DKA)
  • Metabolic acidosis: pH <7.30 and/or HCO3 ≤18 mEq/L
  • Ketosis: elevated serum beta-hydroxybutyrate or urine ketones
  • Usually elevated anion gap
Harrison’s lists representative DKA labs including glucose 250 to 600 mg/dL and typical electrolyte patterns (Harrison’s, p. 11343).

2) Immediate first hour

  1. ABCs, monitor, IV access, cardiac monitor
  2. Labs: BMP, venous/arterial blood gas, ketones, CBC, osmolality, Mg, phosphate, ECG, infection workup if indicated
  3. Start fluids:
    • 0.9% saline 15 to 20 mL/kg in first hour (about 1 to 1.5 L in most adults)

3) Potassium-guided insulin start

  • K <3.3 mEq/L: hold insulin, give K first (usually 20 to 30 mEq/h) until >3.3
  • K 3.3 to 5.2: start insulin + add K to IV fluids (20 to 30 mEq per liter)
  • K >5.2: start insulin, no K initially, recheck frequently

4) Insulin therapy

  • Regular insulin IV:
    • 0.1 U/kg bolus then 0.1 U/kg/h, or
    • 0.14 U/kg/h without bolus
  • Goal glucose drop: about 50 to 75 mg/dL per hour

5) Ongoing fluids and dextrose transition

  • After first hour, choose fluid by corrected sodium:
    • low Na: continue 0.9% saline
    • normal/high Na: 0.45% saline
  • When glucose reaches ~200 mg/dL (DKA), add D5-containing fluid and reduce insulin rate (often 0.02 to 0.05 U/kg/h) to continue clearing ketones and closing anion gap.

6) Bicarbonate and phosphate

  • Bicarbonate: generally avoid unless severe acidemia (commonly pH <6.9)
  • Phosphate: not routine; replace if severe hypophosphatemia, cardiac dysfunction, respiratory weakness, or other specific indications

7) Monitoring

  • Hourly bedside glucose
  • Electrolytes, anion gap, bicarbonate, creatinine every 2 to 4 hours
  • Strict input/output, mental status, vitals
  • Search and treat precipitating cause (infection, missed insulin, MI, stroke, pancreatitis, drugs). Harrison’s emphasizes identifying and treating triggers and close reassessment (p. 11347).

8) Resolution criteria (typical)

DKA resolved when:
  • glucose <200 mg/dL and
  • two of:
    • bicarbonate ≥15 mEq/L
    • pH >7.30
    • anion gap normalized

9) Transition IV to subcutaneous insulin

  • Give long-acting basal insulin
  • Overlap IV insulin for 1 to 2 hours after first SC dose to prevent rebound ketosis
  • Ensure patient can eat and cause is addressed

Useful reference image

DKA lab profile table
If you want, I can give this as a one-page bedside order set (fluids, insulin, potassium, and lab timing) for quick use in adults, or a pediatric-specific protocol (which differs).
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