Certified Hyperbaric Technologist Practice Test

Which type of barotrauma is the most prevalent in patients receiving hyperbaric oxygen therapy?

1. Middle ear barotrauma

2. Pressure ulcer

3. Sinus barotrauma

4. Dry drowning

The correct answer is: Middle ear barotrauma

Middle ear barotrauma is the most prevalent type of barotrauma observed in patients undergoing hyperbaric oxygen therapy. This condition occurs due to a rapid change in pressure during the descent or ascent within the hyperbaric chamber. The middle ear is particularly susceptible to pressure changes because of the Eustachian tube's role in equalizing ear pressure with the external environment. If the Eustachian tube fails to equalize pressure effectively, the resulting pressure differential can cause pain, discomfort, and potential damage to the ear structures. In the context of hyperbaric oxygen therapy, patients often experience significant pressure changes that may not be adequately compensated for, especially if they have pre-existing conditions affecting their Eustachian tube function. Other types of barotrauma listed, such as sinus barotrauma, can occur but are less common compared to middle ear issues, primarily because the dynamics of pressure changes affect the ear more directly. Pressure ulcers, while a concern in any immobile patient, involve skin integrity rather than pressure compensation in body cavities. Dry drowning is unrelated to hyperbaric therapy and refers to a different context of fluid dynamics and airway obstruction. Therefore, middle ear barotrauma is the most relevant and frequently encountered issue in hyperbar