Which type of blast injury is categorized as injuries caused by the overpressure wave?

The correct answer identifies primary blast injuries, which specifically result from the overpressure wave generated by an explosive detonation. The primary injuries caused by this overpressure can lead to damage to air-filled organs, such as the lungs, gastrointestinal tract, and ears. These types of injuries are typically characterized by barotrauma, where the sudden change in pressure can disrupt normal tissue structure, potentially leading to conditions like pneumothorax or tympanic membrane rupture.

In contrast to primary blast injuries, other categories describe injuries related to different mechanisms. Tertiary blast injuries arise from individuals being thrown by the blast wind, secondary injuries occur from shrapnel or debris generated by the explosion impacting the body, and quaternary injuries encompass a range of additional injuries that do not fit into the previous categories, which may include chemical burns, thermal burns, or exacerbation of existing medical conditions due to the blast environment. Understanding these distinctions is crucial for accurate assessment and treatment of blast-related trauma.