A nurse in an emergency department is performing triage on a group of clients. Which of the following clients should the nurse see first?

A client who reports urinary burning and a temperature of 39.2° C (102.5° F).

A client who has cirrhosis of the liver and bruising on their arms.

A client who has heart failure and peripheral edema.

A client who has a new onset of atrial fibrillation and a heart rate of 152/min.