What is the nurse's priority intervention for an adolescent receiving insulin who becomes diaphoretic and irritable?

The priority intervention in this scenario is to obtain a blood glucose reading. This is crucial because the symptoms of diaphoresis and irritability are indicative of a potential hypoglycemic episode, which is a medical emergency for adolescents receiving insulin. By measuring the blood glucose level, the nurse can accurately assess whether the adolescent is experiencing low blood sugar or if there might be another underlying issue causing these symptoms.

Identifying the blood glucose level allows for a targeted response. If the reading confirms hypoglycemia, the nurse can then quickly administer a rapid-acting glucose source to correct the condition. Conversely, if the blood glucose level is normal or high, it directs further evaluation and intervention unrelated to hypoglycemia, emphasizing the importance of this initial assessment for proper management.

While administering a rapid-acting glucose source is an important step if hypoglycemia is confirmed, it's essential to first know the actual blood glucose level before taking action. Similarly, consulting with the physician or changing the insulin infusion rate are not immediate priorities before assessing the blood glucose, as those actions depend on the results of the blood glucose reading.