North Carolina EMT State Practice Exam

What is the nature of injuries sustained during the tertiary phase of a blast?

1. Injuries from chemical exposure

2. Burns from heat

3. Impact injuries from being thrown

4. Internal injuries from blast waves

The correct answer is: Impact injuries from being thrown

The nature of injuries sustained during the tertiary phase of a blast primarily involves impact injuries from being thrown due to the force of the explosive event. In this phase, individuals can be propelled by the shockwave or the explosive blast, resulting in traumatic injuries from collision with structures, debris, or other objects. The mechanism of injury is fundamentally different from other phases; for instance, the secondary phase involves injuries from flying debris, and the primary phase relates to pressure changes affecting body structures. Understanding the tertiary phase is crucial for first responders, as it guides them in assessing and providing appropriate care for those injured in an explosive event. Recognizing the type of injuries that can occur helps in prioritizing interventions and improving patient outcomes in a disaster scenario.