Figure 4

Changes in plasma creatinine concentration relative to the first creatinine measured in the emergency department followed one of three patterns. These patterns are Cr_increase (open white circles), in which the increase in plasma creatinine was greater than 20% at 24 hours after cardiac arrest; Cr_unchanged (closed solid circles), in which plasma creatinine increased no more than 20% or decreased no more than 10% at 24 hours after cardiac arrest, and Cr_decrease, in which plasma creatinine decreased exponentially by more than 10% by 24 hours after cardiac arrest.