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Coagulation abnormalities and myocardial injury frequently occur during sepsis. The aim of the present study was to evaluate the coagulation parameters and cardiac-specific biomarkers at set intervals in septic neonatal calves. Ten healthy calves and 20 septic calves were included in the study. For detecting coagulation parameters prothrombin time (PT), activated partial thromboplastin time (APTT), D-dimer, fibrinogen, antithrombin III (AT III), thrombocyte and, for cardiac biomarkers cardiac troponin (cTn) I, T, and creatine kinase-MB (CK-MB) were evaluated on admission, 24 and 72 hours later in septic calves and once in healthy calves. The results of coagulation parameters showed a significant elevation of PT and APTT times from the time of admission until the 72nd hour and a significant reduction of AT III and fibrinogen from the time of admission until the 72nd hour. Cardiac troponin T was high in the 72nd hour, and CK-MB was high in the time of admission, 24th and 72nd hours in septic calves compare to the healthy calves. There was a correlation between PT, APTT, fibrinogen with cardiac troponin T. In conclusion, cardiac damage can develop during the hypercoagulable state of disseminated intravascular coagulation (DIC), and maybe it is responsible for the elevation of cTnT and CK-MB and worse outcome in neonatal septic calves. [ABSTRACT FROM AUTHOR]