Management of Diabetic Ketoacidosis with Hypertensive Emergency

Emergency Management

• The American Diabetes Association recommends aggressive fluid resuscitation, insulin therapy, electrolyte management, and treatment of the underlying hypertensive crisis, with careful monitoring of both conditions simultaneously 1, 2
• Initial assessment and stabilization should include careful clinical and laboratory assessment, including plasma glucose, blood urea nitrogen, creatinine, serum ketones, electrolytes, and arterial blood gases 2
• The American College of Cardiology suggests implementing continuous cardiac monitoring to detect arrhythmias early, especially important in patients with hypertensive emergency 2
• Identification and treatment of any precipitating factors, such as infection, myocardial infarction, or stroke, which may be contributing to both DKA and hypertensive crisis, is crucial 2, 3
• Aggressive fluid management using balanced electrolyte solutions at a rate of 15-20 mL/kg/hour during the first hour is recommended to restore circulatory volume and tissue perfusion 2
• Insulin therapy should be administered intravenously, with a bolus of regular insulin at 0.15 U/kg body weight, followed by continuous infusion at 0.1 U/kg/h 2
• Target blood glucose levels of 100-180 mg/dL, and when glucose falls below 200-250 mg/dL, add dextrose to hydrating solution while continuing insulin infusion to prevent premature termination of insulin therapy 2, 3
• Electrolyte management should include monitoring potassium levels closely, and adding 20-40 mEq/L potassium to the infusion when serum levels fall below 5.5 mEq/L, once renal function is assured 2
• Bicarbonate administration is generally not recommended for DKA patients, as it has shown no difference in resolution of acidosis or time to discharge 1, 2, 3

Resolution Parameters and Transition of Care

• DKA resolution requires glucose <200 mg/dL, serum bicarbonate ≥18 mEq/L, venous pH >7.3, and anion gap ≤12 mEq/L 2
• When transitioning to subcutaneous insulin, administer basal insulin 2-4 hours before stopping the intravenous insulin to prevent recurrence of ketoacidosis and rebound hyperglycemia 1, 3

Long-term Management

• The American Diabetes Association recommends developing a tailored discharge plan to reduce length of hospital stay and readmission rates 1, 3
• Ensure medication reconciliation with attention to access and scheduled follow-up visits after discharge 1
• Review all medications to ensure no chronic medications were stopped and to ensure safety of new prescriptions 4
• For patients on SGLT2 inhibitors, these must be discontinued 3-4 days before any planned surgery to prevent DKA 5, 2
• Consider adjusting antihypertensive regimen based on the patient's blood pressure control and renal function 2

Common Pitfalls to Avoid

• Premature termination of insulin therapy before complete resolution of ketosis can lead to recurrence of DKA 3
• Inadequate fluid resuscitation can worsen DKA 3
• Overly aggressive blood pressure reduction can lead to organ hypoperfusion 2
• Failure to identify and treat the underlying cause of both DKA and hypertensive emergency 2, 3