Finally, this updated review showed that 3 studies that were not included in the previous meta-analysis were included in our study (3 articles were published in the Chinese Journal, 1 study for CIN, 1 study for CIN, serum creatinine (Scr), and superoxide dismutase, 1 study for CIN and Scr), and 1 outcome (Scr) reflecting the change of renal function was additionally included in our study.