The investigation of TIMI risk index for prediction of contrast-induced acute kidney injury in patients with ST elevation myocardial infarction.

OBJECTIVE: Contrast-induced acute kidney injury (CI-AKI) is a well-known and life-threating complication in patients with ST-elevation myocardial infraction (STEMI) after primary percutaneous coronary intervention (PCI). Several studies demonstrated that the Thrombolysis in Myocardial Infarction (TIMI) Risk Index (TRI) is a useful risk model in predicting early mortality in patients with acute coronary syndrome. The objective of the present study is to evaluate the predictive value of admission TRI for the occurrence of CI-AKI in patients with STEMI treated with primary PCI.

METHODS: This retrospective study was consisted of a total of 660 consecutive STEMI patients who had undergone primary PCI from December 2015 to March 2017.The primary end-point was CI-AKI incidence after primary PCI during the in-hospital course.

RESULTS: The TRI of CI-AKI group was higher than the non-CI-AKI group (24.2 (19.3-32.2) vs. 17.5 (12.9-24.3), p < .001, respectively). In multivariable logistic regression analysis, TRI was found to be an independent predictors of CI-AKI (OR: 1.055, 95% CI: 1.027-1.083, p < .001). The discriminative power of TRI with regards to occurrence of CI-AKI was superior compared to its components.

CONCLUSION: This study is the first to demonstrate that TRI can be used to predict the development of CI-AKI in patients with STEMI who undergo primary PCI. Health professionals might be able to use the TRI risk score to predict CI-AKI due to the simplicity and accessibility of this risk index.