Certified Hyperbaric Technologist Practice Test

What does stage decompression refer to?

1. Descending rapidly from maximum depth

2. Ascending at a fixed rate and having decompression stops

3. Maintaining the same depth for extended periods

4. Using supplemental oxygen for longer dives

The correct answer is: Ascending at a fixed rate and having decompression stops

Stage decompression is a crucial concept in diving that refers to the process of ascending from a dive while making specific stops at certain depths. This method is essential for safely removing nitrogen accumulated in the body during a dive to reduce the risk of decompression sickness, also known as "the bends." By ascending at a controlled rate and incorporating decompression stops, divers allow the excess nitrogen to be released from their tissues in a safe manner. This process is especially important when divers have been at greater depths or have extended the duration of their dives, as it helps to manage the ascent to the surface more safely. It contrasts with other methods of ascent, such as direct ascending to the surface without stops, which can lead to dangerous levels of nitrogen in the body and increase the risk of decompression illness. The options presented include different aspects of diving; however, the essence of stage decompression specifically focuses on the structured and deliberate nature of the ascent with stops, making this option the most accurate representation of the practice.