A client with diabetic ketoacidosis presents with metabolic acidosis. Which medication is the primary treatment?

A client with diabetic ketoacidosis presents with metabolic acidosis. Which medication is the primary treatment?

• A. Regular insulin
• B. Potassium
• C. Calcium gluconate
• D. Sodium bicarbonate

Answer: (A)

In diabetic ketoacidosis, the metabolic acidosis comes from accumulation of ketoacids due to insulin deficiency. The primary treatment is giving insulin, specifically IV regular insulin, because it directly tackles the underlying problem: it stops ongoing ketone production by suppressing lipolysis and hepatic ketogenesis and helps shift metabolism toward glucose utilization. As insulin is given, glucose and ketone levels fall, and the acidosis improves gradually. Insulin also helps normalize electrolyte disturbances that accompany DKA, but it can cause potassium to drop, so potassium monitoring and replacement are essential during therapy. Potassium management is important but not the first-line treatment for the acidosis itself, since potassium levels can be misleading in DKA and require careful correction as insulin is started. Calcium gluconate is reserved for specific situations such as evident hyperkalemia with ECG changes or other electrolyte issues, not as the primary therapy for the acidosis. Sodium bicarbonate is only used in very severe acidosis (for example, pH very low) and is not routinely employed as the initial treatment. So, the medication that most directly addresses and reverses the metabolic derangements of DKA is insulin therapy.

In diabetic ketoacidosis, the metabolic acidosis comes from accumulation of ketoacids due to insulin deficiency. The primary treatment is giving insulin, specifically IV regular insulin, because it directly tackles the underlying problem: it stops ongoing ketone production by suppressing lipolysis and hepatic ketogenesis and helps shift metabolism toward glucose utilization. As insulin is given, glucose and ketone levels fall, and the acidosis improves gradually. Insulin also helps normalize electrolyte disturbances that accompany DKA, but it can cause potassium to drop, so potassium monitoring and replacement are essential during therapy.

Potassium management is important but not the first-line treatment for the acidosis itself, since potassium levels can be misleading in DKA and require careful correction as insulin is started. Calcium gluconate is reserved for specific situations such as evident hyperkalemia with ECG changes or other electrolyte issues, not as the primary therapy for the acidosis. Sodium bicarbonate is only used in very severe acidosis (for example, pH very low) and is not routinely employed as the initial treatment.

So, the medication that most directly addresses and reverses the metabolic derangements of DKA is insulin therapy.