Mrs. CD is a 49 years female who has been admitted inhospital for her road-side accident. She has S. aureusinfection for which she was administered with intravenous nafcillinat a dose of 2 grams every four hours. On discharge, she was handedover a prescription of orally oxacillin at a dose of 500 milligramfour-times daily. After two weeks, she was again admitted in the EDbecause of her fever, body rashes, blood in urine, and reducedurine urgency. Her blood biochemistry revealed a blood ureanitrogen level of 34 mg/dL, serum creatinine level of 2 mg/dL, andelevated white blood cells count. Urinalysis showed the fractionalexcretion of sodium as 3% and a positive test for the presence ofeosinophils, and red blood cells. What is the likely diagnosis andhow she can be treated?
