A Patient Who Is Diagnosed with a Closed Head Injury

Multiple Choice

A patient who is diagnosed with a closed head injury has a urine output of 6 to 8 L/day. Electrolytes are within normal limits, but the antidiuretic hormone (ADH) level is low. Although the patient has had no intake for 4 hours, no change in the polyuria level has occurred. What treatment or diagnostic testing does the healthcare professional prepare the patient for?

A) Administration of desmopressin
B) Serum copeptin testing
C) Insulin administration
D) Renal angiogram