The nurse cares for a group of clients in the emergency department. Which client should the nurse see first?

A client with dementia who refuses to have the pulse oximeter on their finger.

A client with a blood pressure of 138/86 mmHg who is experiencing acute pain.

A client with delirium who is confused and has a temperature of 101.8 F (38.8 C).

A client with a heart rate of 112 who is experiencing elevated levels of anxiety.