Traumatic Brain Injury Clinical Trial
Official title:
Impact of Intermediate Normal Compared to High Normal Oxygen Levels on Outcomes of Patients Presenting in the Emergency Department With Severe Traumatic Brain Injury (INACHOS): a Pilot Randomized Controlled Trial
Despite almost universal usage of supplemental oxygen therapy in patients presenting in the emergency department with traumatic brain injury (TBI), optimal oxygen levels are unclear. The investigators propose a pilot multi-center randomized controlled trial to test the hypothesis that maintaining intermediate normal as opposed to high normal oxygen levels in patients presenting in the emergency department with TBI is feasible, and to obtain preliminary data on the efficacy of the two approaches to oxygen therapy. The aim is that the investigators produce pilot data, which could inform the design of potential subsequent larger clinical trials.
Despite the worldwide burden of traumatic brain injury (TBI), medical research on the field as opposed to other health problems is underrepresented. Consequently, there are few data to support commonly used interventions for the management of TBI, especially in the setting of the emergency department. For example, despite almost universal usage of supplemental oxygen therapy, the effects of different oxygenation levels under normobaric conditions on outcomes of patients presenting in the emergency department with TBI are unknown. On the one hand, liberal oxygenation may provide a margin of safety against hypoxemia and may be needed to meet the high oxygen demands of an acutely altered brain physiology. On the other hand, there are increasing concerns that excessive oxygen supplementation may have harmful effects, such as central nervous system toxicity, cerebral vasoconstriction, impaired immunity leading to predisposition to infections (including pneumonia) and acute lung injury/acute respiratory distress syndrome. Such effects could be avoided by intermediate normal oxygen levels. Taken together, the relative merits and risks of the abovementioned two approaches to oxygen therapy (namely, intermediate normal versus high normal oxygen levels) of patients with TBI in terms of important clinical outcomes (namely, development of nosocomial pneumonia, acute respiratory distress syndrome, disability and mortality) remain undefined. This suggests the need for randomized controlled trials. However, randomized controlled trials focusing on patient-centered outcomes should be preceded by pilot randomized controlled trials, which demonstrate a separation in treatment and protocol compliance (feasibility) associated with the studied interventions. Therefore, the investigators propose a pilot multi-center randomized controlled trial to test the hypothesis that maintaining intermediate normal as opposed to high normal oxygen levels in patients presenting in the emergency department with TBI is feasible, and to obtain preliminary data on the efficacy of the two approaches to oxygen therapy. ;
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