Articles: traumatic-brain-injuries.
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Meta-analyses show a variable relationship between optic nerve sheath diameter (ONSD) and the presence of raised intracranial pressure (ICP). Because optic nerve sheath (ONS) tissue can be deformed, it is possible that ONSD reflects not only the current ICP but also prior deforming biomechanical exposures. In this post hoc analysis of two published data sets, we characterize ONS Young's modulus (E, mechanical stress per unit of strain) and calculate threshold pressure for plastic deformation. ⋯ Ex vivo, ONS plastic deformation occurs at levels of pressure commonly seen in patients with raised ICP, leading to distortion of the ICP-ONSD relationship. This evidence of plastic deformation may illustrate why meta-analyses fail to identify a single threshold in ONSD associated with the presence of raised ICP. Future studies characterizing time-dependent viscous characteristics of the ONS will help determine the time course of ONS tissue biomechanical behavior.
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Ulus Travma Acil Cer · Aug 2022
Role of early decompressive craniectomy in traumatic brain injury: Our clinical experience.
Traumatic brain injury (TBI) is an important cause of death, especially in underdeveloped and developing countries. Diffuse edema in the damaged cerebral tissue as a result of trauma and the subsequent increase in intracranial pressure cause signifi-cant neurological deterioration. Consequently, decompressive craniectomy (DC) is performed as the surgical treatment of TBI. The aim of this study is to evaluate the post-operative mortality and morbidity rates of patients who underwent DC for TBI in our clinic. ⋯ DC, which is performed in the early period of treatment in TBI, is as important as the degree of intracerebral damage at the time of admission and the high Glasgow coma scale score. Post-operative results are more satisfactory in patients who underwent DC at an earlier stage of treatment.
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Cardiac dysfunction is common in the days after severe traumatic brain injury (TBI) and may contribute to hypotension episodes, leading to worse outcomes. Little is known about cardiac function in the minutes and hours immediately following TBI. By using fluid percussion TBI in a swine model, we aimed to characterize the immediate post injury cardiac function. ⋯ Traumatic brain injury is associated with cardiac dysfunction and increased mortality, however there is still a limited understanding of the hemodynamic and echocardiographic response associated with TBI. In this study we demonstrate the hemodynamic and echocardiographic changes in the early stages of TBI in swine. The authors hope that these results may help better understanding on the management of patients with severe head injury.
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Journal of neurosurgery · Aug 2022
A multicenter cohort study of early complications after cranioplasty: results of the German Cranial Reconstruction Registry.
Cranioplasty (CP) is a crucial procedure after decompressive craniectomy and has a significant impact on neurological improvement. Although CP is considered a standard neurosurgical procedure, inconsistent data on surgery-related complications after CP are available. To address this topic, the authors analyzed 502 patients in a prospective multicenter database (German Cranial Reconstruction Registry) with regard to early surgery-related complications. ⋯ The authors have presented class II evidence-based data on surgery-related complications after CP and have identified specific preexisting risk factors. These results may provide additional guidance for optimized treatment of these patients.
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To investigate the impact of COVID-19 on trauma admissions to a National Neurosurgical Centre in Ireland. ⋯ Traumatic brain injury 30-day mortality rates increased during the first COVID-19 lockdown period. Trauma admission rates to ICU remained unchanged despite an overall reduction in trauma admissions. Transfer time, time to surgery, and length of stay were impacted by COVID-19. Despite the challenges COVID-19 has posed, it is important to maintain a fully functioning neurosurgical and neurocritical care service during the pandemic.