A client is brought to the emergency department (ED) by a friend who states that the client recently ran out of his lorazepam (Ativan) and has been having a grand mal seizure for the last 10 minutes....

A client is brought to the emergency department (ED) by a friend who states that the client recently ran out of his lorazepam (Ativan) and has been having a grand mal seizure for the last 10 minutes. The nurse observes that the client is still seizing. The nurse should do the following in which order of priority from first to last?