Which laboratory test result is most important for monitoring in a client with diabetic ketoacidosis (DKA)?

• A. Arterial blood gases.
• B. Creatinine.
• C. Blood glucose level.
• D. Urine ketones.

Answer: (C)

The most important laboratory test result for monitoring in a client with diabetic ketoacidosis (DKA) is the blood glucose level. In DKA, the primary issue is severely elevated blood glucose due to insufficient insulin, leading to hyperglycemia. Monitoring blood glucose levels allows healthcare providers to assess the effectiveness of interventions and treatments aimed at lowering blood glucose and managing the condition.

While other laboratory tests such as arterial blood gases, creatinine, and urine ketones provide valuable information about the patient's acid-base status, kidney function, and presence of ketones, respectively, the blood glucose level is the most critical indicator in the acute management of DKA. Rapidly correcting hyperglycemia is essential to mitigate the risk of complications associated with DKA, such as cerebral edema or death. Therefore, focusing on blood glucose levels is paramount in monitoring the treatment and resolution of the acute metabolic derangement seen in DKA.