Certified Hyperbaric Technologist Practice Test

Treating a patient with an untreated pneumothorax in the HBO chamber can put the patient at risk for what condition?

1. Barotrauma

2. A spontaneous pneumothorax

3. A tension pneumothorax

4. Lung infection

The correct answer is: A tension pneumothorax

Treating a patient with an untreated pneumothorax in a hyperbaric oxygen (HBO) chamber can lead to a tension pneumothorax due to the increased pressure within the chamber. A pneumothorax occurs when air leaks into the space between the lung and the chest wall, potentially causing the lung to collapse. When pressure is increased in the HBO chamber, any air trapped in the pleural space can expand, which may push the lung further down and create a situation where air becomes trapped and cannot escape. This situation can lead to a tension pneumothorax, a life-threatening condition where increased pressure compresses the lung and can affect cardiovascular stability, leading to serious complications including respiratory and circulatory failure. Recognizing the risks associated with treating a patient who has an untreated pneumothorax in an HBO chamber underscores the importance of thorough pre-screening and ensuring proper treatment or management of existing pneumothorax before undergoing hyperbaric therapy.