Case Study of a Breacher: Investigation of Neurotrauma Biomarker Levels, Self-reported Symptoms, and Functional MRI Analysis Before and After Exposure to Measured Low-Level Blast.

We report a case study on a single military member who received moderate blast overpressure (OP) exposure during routine breacher training. We extend previous research on blast exposure during training, which lacked sufficient data to assess symptom profiles and OP exposure. The present work was conducted because a subjective symptom profile similar to that seen in sports concussion has been reported by military personnel exposed to blast.

Caffeine improves reaction time, vigilance and logical reasoning during extended periods with restricted opportunities for sleep.

Rationale: Various occupational groups are required to maintain optimal physical and cognitive function during overnight periods of wakefulness, often with less than optimal sleep. Strategies are required to help mitigate the impairments in cognitive function to help sustain workplace safety and productivity.

Objectives: To test the effectiveness of repeated 200 mg doses of caffeine on cognitive function and live-fire marksmanship with soldiers during three successive nights of sustained wakefulness followed by 4-h afternoon sleep periods.

Serum brain biomarker level, neurocognitive performance, and self-reported symptom changes in soldiers repeatedly exposed to low-level blast: a breacher pilot study.

"Breachers" are a unique military and law enforcement population because they are routinely exposed to low-level blast (LLB) during training and operations. This repeated exposure has been associated with symptoms similar to that of sports concussion. This study examined effects of repeated exposure to LLB during an explosive entry course.

Extreme measures: field amputation on the living and dismemberment of the deceased to extricate individuals entrapped in collapsed structures.

Collapsed structures, typically as a result of earthquakes, may result in individuals entrapped by their limbs under heavy structural elements. In addition, access to living persons may be blocked by the deceased. Individuals are often critically ill by the time they are found, and rapid extrication is warranted.