Aim: To assess value of kidney injury molecule-1 (KIM-1) for prediction of inhospital events in CAD patients undergoing coronary artery bypass graft (CABG) surgery.
Material and methods: We analyzed postoperative course of 719 patients subjected to CABG in Research Institute for Complex Issues of Cardiovascular Diseases between March, 2011 and April, 2012. In all patients we measured creatinine concentrations, glomerular filtration rate (GFR) by MDRD and urine KIM-1 levels before and on day 7 after CABG. Major unfavorable events (myocardial infarction, stroke or transient ischemic attack, acute or decompensated chronic renal failure or remediastinotomy) were registered during hospital stay. The EuroSCORE (European System for Cardiac Operative Risk Evaluation) risk of operative mortality was calculated for each patient.
Results: Patients with different EuroSCORE risk had similar serum creatinine levels while KIM-1 concentrations in urine were significantly higher in patients with moderate and high EuroSCORE risk as compared with low-risk patients. Patients who experienced postoperative events had significantly higher KIM-1 both before and after surgery while there were no differences in such renal dysfunction markers as creatinine and GFR.
Conclusion: Preoperative elevated KIM-1 can act as a marker of complicated postoperative period after CABG.