What is often a risk associated with tertiary blast injuries?

Tertiary blast injuries are primarily associated with being thrown or propelled by the force of an explosion, which can result in significant trauma. Entrapment in rubble is a critical risk factor as individuals caught in the blast zone may be thrown against structures or end up trapped under debris following the explosion. This situation can lead to a variety of injuries, including fractures and crush injuries, and complicate rescue efforts.

In contrast, while infection, chronic pain, and visual impairment are certainly concerns in trauma care, they are not the primary immediate risks linked specifically with tertiary blast injuries. Infection due to exposure is more associated with wounds and open fractures after the rescue, not immediately during the blast. Chronic pain could result from various injuries but isn't a distinct risk linked to the acute blast. Visual impairment may occur due to secondary blast effects or shrapnel but is less directly associated with the mechanism of being thrown or impacted by debris. Thus, being entrapped in rubble is the most pertinent risk connected with tertiary blast injuries.