Which condition is characterized by severe dehydration, electrolyte imbalances, and potentially life-threatening metabolic acidosis?

Which condition is characterized by severe dehydration, electrolyte imbalances, and potentially life-threatening metabolic acidosis?

• A. Hyperkalemia
• B. Hypoglycemia
• C. Lactic acidosis
• D. Diabetic ketoacidosis

Answer: (D)

This scenario is about diabetic ketoacidosis, a diabetic emergency characterized by severe dehydration from osmotic diuresis, electrolyte disturbances, and a life‑threatening metabolic acidosis. In this condition, low insulin and high counterregulatory hormones trigger lipolysis and ketogenesis, leading to accumulation of ketoacids that create a high anion gap metabolic acidosis. The high blood glucose causes massive water loss in urine, so patients become extremely dehydrated and lose electrolytes like potassium and sodium, setting up a dangerous electrolyte imbalance. Potassium can be elevated early on but total body potassium is depleted, which is important for management.

While hyperkalemia can be present in DKA, the combination of severe dehydration with electrolyte shifts and a profound metabolic acidosis fits DKA best. Hypoglycemia presents with low glucose without this acidotic picture, and lactic acidosis centers on lactate buildup from tissue hypoxia rather than the ketone-driven acidosis and dehydration seen in DKA.