J Trauma
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Comparative Study
Controlled blast exposure during forced explosive entry training and mild traumatic brain injury.
There is a paucity of data regarding the pathophysiology and short- and long-term neurologic consequences of primary blast injury in humans. The purpose of this investigation was to test the feasibility of implementing a research protocol in the context of a forced explosive entry training course. ⋯ Studying the effects of blast exposure on the human brain in a controlled experimental setting is not possible. Forced explosive entry training courses afford an opportunity to begin examining this issue in real time in a controlled setting. This study underscores the importance of baseline testing of troops, of the consideration of subclinical implications of blast exposure, and of continued studies of the effects of blast exposures, including repeated exposures on the human brain.
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Pediatric pedestrian injuries are a major health care concern, specifically in urban centers. An educational program (WalkSafe), given one time during the school year, has been shown to improve childhood pedestrian safety. We examined whether this program could create similar long-term cognitive and behavioral changes in our school-aged children. ⋯ A one-time annual educational program resulted in long-term knowledge retention between grades 3 and 4 only. In contrast, scores in younger grades reverted to baseline pretest values seen in year 1. Short- and intermediate-term knowledge gains were seen in all grades for both years. Because older children more often walk alone, we postulate that the improved retention may be the result of repeated exposure and practice as a pedestrian. Cognitive knowledge did not appear to translate into improved pedestrian behavior. Walking with an adult also had a negative impact on observed pedestrian safety behavior. The efficacy and impact of a one-time educational program may be insufficient to change long-term behavior and must be reevaluated.
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The purpose of this study was to investigate the amount of fluid required and the sensitivity of the saline load test to identify an intra-articular arthrotomy of the elbow. ⋯ Our results demonstrate that 40 mL of fluid must be injected to identify the majority of traumatic arthrotomies about the elbow. Moreover, adding range of motion after the injection increases the detection rate.
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Colonic trauma in wartime most commonly results from direct injury along the path of a penetrating missile. Rarely, the colon may be injured by primary blast effect or by propagation of energy by the missile, remote from the track of the projectile. ⋯ Military surgeons should be aware of the phenomenon of indirect injury to the colon after high-energy transfer GSW and blast injury. A high index of suspicion should be maintained and cross-sectional imaging used where feasible. Primary colonic reconstruction was used safely in these patients with indirect colonic injuries.
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Injuries to pedestrians struck by motor vehicles represent a significant public health hazard in large cities. The purpose of this study is to investigate the demographics of alcohol users who are struck by motor vehicles and to assess the effects of alcohol on pedestrian crossing patterns, medical management, and outcomes. ⋯ Alcohol use is a significant risk factor for pedestrians who are struck by motor vehicles. These patients are more likely to cross the street in an unsafe manner and sustain more serious injuries. Traffic safety and injury prevention programs must address irresponsible alcohol use by pedestrians.