Final answer:
The nurse should prioritize managing the seizure activity to prevent injury and then ensure the client's airway is clear and that they can breathe effectively.
Step-by-step explanation:
The nurse should first address the client's seizure activity to ensure their safety. During a seizure, it is critical to protect the client from injury by moving any dangerous objects away from them, cushioning their head if necessary, and positioning them safely. After managing the immediate seizure activity and ensuring the client is safe, the nurse should then ensure the client's airway is clear and that the client is breathing effectively. It is a priority in seizure management to maintain the airway and prevent aspiration, which can occur if the client vomits or has secretions. Emotional support is important, but it comes after addressing immediate physical health concerns.