Serum Cystatin C as a predictor of cardiac surgery associated-acute kidney injury in patients with normal preoperative renal functions. A prospective cohort study

In patients with apparently normal renal functions, preoperative Cys C may be a predictor of post cardiac surgery AKI. In those patients, especially diabetics, Cys C may uncover subtle nephropathy which makes them more prone to AKI posed by stresses of cardiac surgery.