After Receiving Change-Of-Shift Report About These Four Patients, Which Patient

After receiving change-of-shift report about these four patients, which patient should the nurse assess first?

A) A 22-year-old admitted with SIADH who has a serum sodium level of 130 mEq/L.
B) A 31-year-old who has iatrogenic Cushing's syndrome with a capillary blood glucose level of 244 mg/dl.
C) A 53-year-old who has Addison's disease and is due for a scheduled dose of hydrocortisone (Solu-Cortef) .
D) A 70-year-old who recently started levothyroxine (Synthroid) to treat hypothyroidism and has an irregular pulse of 134.