Table 6. Creatinine Changes in Those with Preoperative Renal Impairment

Conversion factor for creatinine μm to mg/dl: 0.0113.

Preoperative renal impairment = creatinine > 130 μm (1.47 mg/dl), urea > 7.7 mm (21.6 mg/dl blood urea nitrogen), or both; CI = confidence interval; IQR = interquartile range.