What type of injuries can occur due to an object striking the body after a blast?

The correct answer is tertiary blast injuries, which occur when a person is propelled into another object or the ground due to the force of the blast. This type of injury typically results from the victim being thrown by the shockwave, leading to blunt trauma, fractures, or other injuries sustained upon impact with hard surfaces or other objects.

Understanding the context of blast injuries is crucial. Primary blast injuries are related to the direct effects of the blast wave, such as injuries to gas-filled organs. Secondary blast injuries arise from shrapnel or debris that is propelled by the explosion, causing lacerations, penetrative wounds, or trauma from flying objects. Quaternary blast injuries encompass additional injuries that may arise in the aftermath of the explosion, such as chemical exposure, burns, or respiratory issues from inhaling dust and debris. Each category highlights distinct mechanisms of injury, which is essential for diagnosis and treatment in emergency medical settings.