Which of the following is NOT a mechanism of blast injuries?

• A. Primary blast wave
• B. Flying debris
• C. The blast wind throwing the body
• D. Cold exposure from the blast

Answer: (D)

Blast injuries happen through several mechanisms: the pressure wave (primary) can crush or injure air-filled organs like the lungs and ears; flying debris (secondary) can cause penetrating injuries from projectiles; and the blast wind can throw the body, causing blunt trauma or fractures (tertiary). Cold exposure from the blast is not a direct injury mechanism; it would be an environmental condition or a post-blast circumstance rather than a way the blast itself injures you. So the statement about cold exposure being involved in blast injuries isn’t a mechanism of injury, whereas debris, the pressure wave, and being thrown by the blast all describe actual injury processes.