Certified Hyperbaric Technologist Practice Test 2026 – Comprehensive Exam Prep

The risk of developing sinus barotrauma is notably associated with the transition from sea level to increased pressure at depths up to 10 feet of seawater (fsw). As a diver descends, the ambient pressure increases, and if the sinus cavities are unable to equilibrate with the changing pressure, negative pressure can build up within the sinus cavities, leading to barotrauma.

At depths greater than 10 fsw, the likelihood of sinus barotrauma can still occur, but the risk is primarily pronounced around the initial descent due to the physiological changes affecting the sinuses. At sea level to this depth, individuals may experience discomfort or complications if they experience congestion or other obstructions in their sinuses.

While other options mention varying ranges of pressure, this specific range captures the critical point where divers need to be especially vigilant about managing their equalization techniques, making it essential for those practicing hyperbaric therapy and diving safety to understand the associated risks.