An obese, elderly client is being given a high-dose steroid protocolas emergency treatment of a spinal cord injury. The client's family has requested frequent refills for his cup of chipped ice and his urine output is 600mL for the first 4 hours and 900mL for the second 4 hours. The family states that the client was often thirsty at home, even prior to the injury. The nurse should take which of the following most appropriate actions?

a. Obtain finger stick blood glucose and tabulate the client's 24 hour intake and output
b. Restrict the client's intake to prevent fluid volume excess and electrolyte inbalance
c. Obtain and monitor CBC, hemoglobin and hematocrit, and vital signs for hypervolemia
d. Evaluate the client's breathing pattern and understanding of current treatment plan