A nurse is caring for a client who has type 1 diabetes mellitus. The nurse misread the client's morning blood glucose level as 210 mg/dL instead of 120 mg/dL and administered the insulin dose appropriate for a reading over 200 mg/dL before the client's breakfast. Which of the following actions is the nurse's priority?

When a nurse administers an incorrect insulin dose, the immediate concern is the risk of hypoglycemia, especially since the insulin dose given was for a higher blood glucose level than the actual reading. Hypoglycemia can occur when blood glucose levels drop below 70 mg/dL. Symptoms of hypoglycemia include shakiness, sweating, confusion, and in severe cases, loss of consciousness. Monitoring the client for hypoglycemia allows the nurse to detect and treat it promptly, ensuring the client's safety. While completing an incident report is important for documenting the medication error and preventing future occurrences, it is not the immediate priority. The nurse's first responsibility is to ensure the client's safety by addressing the potential hypoglycemia. Once the client's condition is stable, the nurse can then complete the incident report. Administering 15 to 20 grams of carbohydrate is a treatment for hypoglycemia. However, this action should only be taken if the client is actually experiencing hypoglycemia. The nurse should first monitor the client's blood glucose levels to confirm hypoglycemia before administering carbohydrates. Notifying the nurse manager is important for accountability and to ensure that appropriate follow-up actions are taken. However, it is not the immediate priority. The nurse should first monitor the client for hypoglycemia and address any immediate health concerns before notifying the nurse manager.