In a blast injury scenario where a person was propelled and speared on a fence, which blast injury mechanism applies?

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Multiple Choice

In a blast injury scenario where a person was propelled and speared on a fence, which blast injury mechanism applies?

Explanation:
The event demonstrates a tertiary blast injury. When a blast’s overpressure propels a person through the air, the energy can throw them into fixed objects. The resulting injuries come from the body’s displacement and impact with those objects (blunt trauma and possible impalement), not from the initial blast wave itself or from flying debris. Secondary injuries would come from shrapnel or fragments caused by the explosion, which isn’t the primary mechanism here. So being hurled and striking a fence fits tertiary—the energy transfer via displacement and impact.

The event demonstrates a tertiary blast injury. When a blast’s overpressure propels a person through the air, the energy can throw them into fixed objects. The resulting injuries come from the body’s displacement and impact with those objects (blunt trauma and possible impalement), not from the initial blast wave itself or from flying debris. Secondary injuries would come from shrapnel or fragments caused by the explosion, which isn’t the primary mechanism here. So being hurled and striking a fence fits tertiary—the energy transfer via displacement and impact.

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