Problem: A client sustained a head injury when falling from a ladder. While in the hospital, the client begins voiding large amounts of clear urine and reports being very thirsty. The client states feeling weak and having experienced an 8-pound weight loss since admission. What condition does the nurse expect the client to be tested for? Syndrome of inappropriate antidiuretic hormone secretion (SIADH) Arginine vasopressin deficiency (AVP-D) Hypothyroidism Pituitary tumor. Need Assignment Help?