While performing triage in the ED, the nurse determines which patient should be seen first.

A patient with type 1 diabetes in ketoacidosis; BP 100/60 mm Hg, HR 100 beats/min, RR 32.

A patient with a respiratory infection with a cough productive of greenish sputum; BP 128/86 mm Hg, HR 88, RR 25.

A patient with a deformed leg indicating a fractured tibia; BP 110/60 mm Hg, HR 86, RR 18.

A patient with burns on the face and chest; BP 120/80 mm Hg, HR 92, RR 24.