IA MED Certified Flight Registered Nurse (CFRN) Practice Test

In blast injuries, which mechanism causes the body to be hurled by the blast wind and strike other objects or people?

Primary Secondary Tertiary Quaternary

Correct Answer:

Secondary

Explanation:

The scenario described is a tertiary blast injury. In a blast, the initial overpressure (primary) can injure air-filled organs; flying fragments from the explosion cause secondary injuries. The body being forced by the blast wind and striking other objects or people represents the tertiary mechanism, where the force of the blast physically displaces the person. Quaternary injuries cover other effects like burns, inhalation injuries, or exacerbation of underlying conditions. So, being hurled by the blast wind and impacting surroundings is tertiary, not secondary.

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