Review Question - QID 213714

A 54-year-old man is evaluated in the hospital after his creatinine was found to be elevated on morning rounds. He presented to the emergency department 7 days ago when he was involved in a motor vehicle accident and sustained numerous laceration and puncture wounds. At that time, he required transfusion of 2 units of packed red blood cells for hemodynamic instability. After stabilization, he was placed on ceftriaxone for infection prophylaxis and a UTI. Past medical history includes poorly controlled diabetes as well as a family history of an aunt with polycystic kidney disease. Urinalysis is obtained and the results are shown in Figure A. Which of the following interventions would be most beneficial for this patient's disorder?