Certified Hyperbaric Technologist Practice Test

Which of the following actions is NOT a supportive measure for Acute Gas Embolism (AGE) prior to Hyperbaric Oxygen (HBO) therapy?

1. CPR if indicated

2. Supine position (flat)

3. 100% oxygen by non-rebreather

4. Trendelenburg position (head down)

The correct answer is: Trendelenburg position (head down)

In managing Acute Gas Embolism (AGE) prior to Hyperbaric Oxygen (HBO) therapy, the primary goal is to minimize the effects of gas bubbles in the cardiovascular system and promote the resolution of symptoms. The choice of position and oxygen administration plays a critical role in supportive care. The option that is not considered a supportive measure is the Trendelenburg position (head down). This position can actually be counterproductive in cases of AGE because it may increase central venous pressure and potentially facilitate the movement of bubbles from peripheral veins to the right heart, worsening the situation. The goal is to avoid any maneuver that could lead to increased risk of bubble migration. Conversely, measures such as administering 100% oxygen by non-rebreather mask help displace nitrogen from gas bubbles and promote reabsorption. Maintaining the patient in a supine position allows for better venous return and may help prevent further complications. Performing CPR if indicated is crucial for sustaining life and providing oxygenation to vital organs until hyperbaric therapy can be initiated. Therefore, recognizing the correct supportive actions can significantly influence the outcome in cases of Acute Gas Embolism, making the choice of the Trendelenburg position as an inappropriate option clear in this context.