The patient was suspected of having a pulmonary embolism and a decision was made to proceed with CTA withintravenous CM. Because the patient was considered highrisk for CIN, he received normal saline solution (240 mLover 1 hour) before contrast exposure, which wascontinued at 100 mL/h for 6 hours after the procedure.CTA identified a segmental pulmonary embolism. Thefollowing day, Scr level was 2.5 mg/dL with urine outputof 1,100 mL and then started to decline, returning to anScr level of 1.9 mg/dL by the third day