CRP and acute kidney injury: Coexisting risk factors include age, compromised kidney function, pre-operative atrial AF, and duration of surgery.[29] The interval between cardiac catheterization and surgery, elevated post-operative C-reactive protein levels, and erythrocyte sedimentation rate are independent predictors of acute kidney damage in patients undergoing isolated coronary artery bypass grafting.[30] The risk factors exaggerate the incidence of AKI.[31]