الفهرس 
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Abstract
This study is a descriptive case control study conducted on 40 subjects (20 patients diagnosed with recent severe trauma within the first 24 hours, and 20 age and sex matched controls). Patients were recruited from the Emergency Department, Assiut Universty Hospitals, in the period from January 2019 up to December 2021and the study was done in the Clinical Pathology Department of Assiut University. The aim of the present study was to analyze the abnormalities of sonoclot signature in patients with recent severe trauma using sonoclot analyzer compared to conventional coagulation parameters. The sonoclot signature parameters studied included sonoclot activated clotting time (SONACT), clot rate (CR), and platelet function (clot retraction), and to establish a correlation between the above mentioned sonoclot parameters and conventional coagulation tests like prothrombin time (PT), international normalized ratio (INR), activated partial thromboplastin time (aPTT), fibrinogen levels, platelet count, and D-dimer levels in these patients.