Q. A 45-year-old male patient presents to the emergency department with severe right flank pain radiating to the groin for the past 6 hours. The pain is associated with nausea and vomiting. He has a history of recurrent renal stones and has been on a high-protein diet for the past month. On examination, he appears uncomfortable and is writhing in pain. Blood pressure is 140/90 mm Hg, pulse is 100 beats/min, and respiratory rate is 20 breaths/min. Physical examination is remarkable for right costovertebral angle tenderness. A urinalysis shows hematuria and the presence of crystals. What is the next step in the management of this patient?