• Amr S Omar, Khaled Mahmoud, Samy Hanoura, Hany Osman, Praveen Sivadasan, Suraj Sudarsanan, Yasser Shouman, Rajvir Singh, and Abdulaziz AlKhulaifi.
• Department of Cardiothoracic Surgery/Cardiac Anaesthesia and ICU, Heart Hospital, Hamad Medical Corporation, Doha, PO 3050, Qatar. a_s_omar@yahoo.com.
• BMC Anesthesiol. 2017 Jan 31; 17 (1): 15.

BackgroundThe value of cardiac troponin as a risk assessment tool for cardiac disease in the setting of end-stage renal diseases (ESRD) is not equivalent to its value in those with normal renal function. This consideration had not been studied in settings of acute kidney injury (AKI). We aim to explore the diagnostic value of high sensitive troponin T (hsTnT) in the settings of cardiac surgery-induced AKI.MethodsSingle center observational retrospective study. Based on the AKI Network, patients divided into 2 groups, group I without AKI (259 patients) and group II with AKI (100 patients) where serial testing of hsTnT and creatine kinase (CK)-MB were followed in both groups. Patients with (ESRD) were excluded.ResultsThe mean age in our study was 55.1 ± 10.2 years. High association of AKI (27.8%) was found in our patients. Both groups were matched regarding the age, gender, body mass index, the association of diabetes or hypertension, and Euro score. AKI group had significantly higher mortality 5% vs group I 1.1% (p = 0.03). The hsTnt showed a significant sustained rise in the AKI group as compared to the non-AKI group, however CK-MB changes were significant initially but not sustained. The AKI group was more associated with heart failure 17.9% vs 4.9% (p = 0.001); and post-operative atrial fibrillation, 12.4% vs 2.9% (p = 0.005). Lengths of ventilation, stays in ICU and in hospital were significantly higher in the AKI group.ConclusionsUnlike the CK-MB profile, the hsTnT showed significant changes between both groups all over the course denoting possible delayed clearance in patients with AKI.

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