Q. A 35-year-old man with newly diagnosed leukemia presents to the emergency department with sudden onset of severe, sharp, unilateral pain in the left flank that radiates to his testes. He has been receiving chemotherapy treatment for the past month and reports recurrent nausea, vomiting and a history of kidney stones. He rates his pain as an 8 out of 10 , and reports that he has had similar episodes in the past. Physical examination reveals costovertebral angle tenderness and urinalysis shows the presence of rhomboid-shaped crystals. The patient's blood pressure is 130/80 mm Hg, his heart rate is 90/min and temperature is 37.5 degrees Celsius. What is the appropriate management for this patient at this time?