Studies have suggested that patients with severe head injury, in addition to Glasgow Coma Scale (GCS), reveal high D-dimer levels which are independently associated with increased mortality. In the present review, we analyzed the literature where studies have reported the role of D-dimers as a potential biomarker in stratification and early identification of patients with TBI who are at risk of clinical deterioration, where early intervention can improve overall outcomes. After scrutinizing 246 articles, which were narrowed down to 38 (16 prospective, 9 retrospective, 2 RCTs, 2 case-control, 1 cross-sectional study). All these studies included 7,589 patients, in whom D-dimer was measured at different timings and in different ways. Most studies demonstrated significant changes that could be utilized for prognostication. However, we also observed instances where no significant changes were found. Unfortunately, direct comparisons were hindered by variations in the methods used to measure D-dimer across different outcomes. Limitations included the lack of a substantial number of RCTs, heterogeneity of available data, and the difficulty in summarization of specific cutoff points for D-dimer. Future studies, especially RCTs, should measure D-dimer levels at different times from injury for an accurate assessment of its correlation with outcomes.

Traumatic brain injury (TBI) is a significant global health concern with substantial contributions to illness and mortality rates. This study aims to scrutinize the intricate interplay between neurological and circulatory abnormalities post-TBI, particularly focusing on the challenge posed by cardiac arrest in TBI patients. The study employs a comprehensive approach, utilizing clinical assessments, electrocardiograms, intracranial pressure monitoring, brain imaging, and biomarker utilization. It explores the effectiveness of these methods in detecting cardiac arrest in TBI patients. Additionally, the research delves into resuscitation techniques, hemodynamic stabilization, intracranial pressure management, and neurological enhancement as potential therapeutic modalities. The results highlight the importance of prompt initiation of cardiopulmonary resuscitation and adherence to advanced cardiac life support protocols in TBI patients with cardiac arrest. Prognostic factors such as injury severity, response time, effectiveness of resuscitation interventions, and pre-existing medical conditions are identified as crucial elements in predicting cardiac arrest outcomes in TBI patients. The study concludes by emphasizing the critical necessity of a comprehensive approach to understand and manage the complex relationship between cardiac arrest and TBI. Incorporating scientific discoveries, clinical perspectives, and technological advancements, the review underscores the importance of addressing this multifaceted medical challenge through a thorough analysis and effective management strategies.