The use of bicarbonate for pH > 6.9 is associated with multiple risks: paradoxically worsening CNS acidosis, risk of hypokalaemia, increased risk of cerebral oedema (especially in children), and delayed clearance of ketones.
The goal of bicarbonate therapy is NOT to normalize pH, but to raise it to a "safe" level of 7.0, where cardiac and metabolic functions are less compromised. Once pH ≥ 7.0, stop bicarbonate and rely on insulin/fluids.
Hyperglycemic crises in adult patients with diabetes.
Bicarbonate therapy remains controversial in DKA. Controlled trials have not shown improved clinical outcomes or more rapid acidosis resolution for pH between 6.9 and 7.1.