Which of the following is a common treatment method for both DKA and HHNC?

Fluid replacement therapy is a common treatment method for both Diabetic Ketoacidosis (DKA) and Hyperglycemic Hyperosmolar Nonketotic Coma (HHNC). In both conditions, patients typically experience severe dehydration due to osmotic diuresis, which leads to significant fluid loss. Administering fluids helps to restore intravascular volume, correct electrolyte imbalances, and dilute hyperglycemia.

In DKA, fluid replacement is crucial because it aids in the correction of hyperglycemia and acidosis. The replenishment of fluids can help improve renal function, allowing for better clearance of ketones and glucose. Similarly, in HHNC, fluid therapy addresses the profound dehydration and helps reduce blood glucose levels.

While insulin therapy is necessary in both conditions to lower glucose levels and address metabolic derangements, it is not the only or the initial step in management, unlike fluid replacement, which is vital in the early treatment phases. Oral glucose and oral antidiabetic medications are not appropriate treatments in acute settings for either condition as they do not address the essential needs of hydration and metabolic stabilization.