Diagnostic Criteria and Management of Diabetic Ketoacidosis

Introduction to DKA Diagnosis

The American Diabetes Association guidelines state that a diagnosis of diabetic ketoacidosis (DKA) requires a pH ≤7.30, along with hyperglycemia, positive ketones, and elevated anion gap, and a pH of 7.33 alone does not meet these diagnostic criteria 1, 2

The American Diabetes Association guidelines require all of the following for a DKA diagnosis: arterial pH ≤7.30 (or venous pH, which runs approximately 0.03 units lower) 4, positive serum or urine ketones 3, and anion gap >10-12 mEq/L 3

The American Diabetes Association classifies DKA by severity, with mild DKA defined as pH 7.25-7.30, bicarbonate 15-18 mEq/L 5, moderate DKA defined as pH 7.00-7.24, bicarbonate 10 to <15 mEq/L 4

The American Diabetes Association recommends that patients with DKA and a pH >7.30, but with other diagnostic criteria met, should receive standard DKA management with fluids, insulin, and electrolyte monitoring 6, 5
The American Diabetes Association suggests that bicarbonate therapy is not necessary for patients with DKA and a pH ≥7.0, and is only considered for pH <6.9 7, 6, 4
The American Diabetes Association recommends that subcutaneous insulin may be appropriate for mild DKA cases rather than IV infusion 6, 5