A nurse in an emergency department is assessing a client who reports ingesting thirty diazepam tablets 20 min ago. The client is lethargic and a respiratory rate of 10/min. After securing the client's airway and initiating an IV, which of the following actions should the nurse take next?

A. Flumazenil is the antidote for benzodiazepine overdose and should be administered to reverse the effects of diazepam. B. Monitoring the IV site is important but not an immediate priority in this situation. C. Seizure precautions are not the primary concern after benzodiazepine overdose. D. Evaluating for suicidal behavior is important but comes after stabilizing the client.