First Aid for Corrections Officers Practice Test 2025 - Free First Aid Practice Questions and Study Guide

A closed chest injury typically occurs as a result of blunt force trauma, which can happen in various situations, such as a fall, vehicle collision, or physical altercation. The impact may not penetrate the skin, but it can still cause significant damage to the underlying structures, including the lungs, ribs, and blood vessels. In such cases, the injury is internal, and external signs may be limited or absent, making it distinct from other types of injuries that involve piercing objects or break the skin.

Blunt force trauma can lead to various complications, such as contusions, rib fractures, or even pneumothorax (air in the chest cavity), emphasizing the seriousness of closed chest injuries and the need for comprehensive evaluation and treatment. Internal bleeding can be a consequence of such trauma, but it is not the initial definition of a closed chest injury itself; rather, it can be one of the potential complications. Skin breaking is associated with open injuries, which involves penetrating trauma rather than closed injuries, further reinforcing why the first choice is the most accurate description of a closed chest injury.