A 50-year-old man presented with the abnormal findings on urine cytology and had a significant history of bladder cancer. Moreover, a computed tomographic urography was planned for add-on evaluation and to minimize the risk of contrast-induced nephropathy.
Medications Enteric-coated aspirin: 81 mg/d Lisinopril: 10 mg/d Laboratory Results Sodium: 145 mEq/L Potassium: 3.8 mmol/L Creatinine: 1.7 mg/dL (to convert to μmol/L, multiply by 88.4). Estimated glomerular filtration rate (GFR): 46 mL/min per 1.73 m 2 ( normal range, >90 mL/min per 1.73 m 2 )
