Certified Hyperbaric Technologist Practice Test

How is barotrauma defined?

1. Tissue damage from a rapid temperature change

2. Tissue damage resulting from a pressure inequality between the environment and a gas-filled space

3. Tissue swelling due to fluid retention

4. Tissue injury caused by physical impact

The correct answer is: Tissue damage resulting from a pressure inequality between the environment and a gas-filled space

Barotrauma is defined as tissue damage resulting from a pressure inequality between the environment and a gas-filled space, such as the lungs, sinuses, or middle ear. This condition occurs primarily during events that involve significant changes in pressure, such as scuba diving, flying, or hyperbaric treatments. When the pressure outside the body rapidly decreases or during ascent after descents, gas within body cavities expands. If the surrounding pressure is not equalized properly, it can lead to over-distension of the gas-filled space, resulting in injury to the tissues. This is particularly relevant for structures where the pressure difference can create stress on sensitive tissues, leading to pain and potentially severe complications. The other options describe different types of injury or damage, such as temperature changes or physical impacts, which do not pertain to the specific mechanism of injury associated with barotrauma. Understanding the mechanics of pressure and its effects on gas-filled spaces is crucial for recognizing and preventing barotrauma in various environments.