Final answer:
When diving, it is important to ascend slowly to prevent decompression sickness. If preventive measures fail, hyperbaric oxygen therapy in decompression chambers can be used to treat divers with DCS.
Step-by-step explanation:
When diving, the ambient pressure decreases and dissolved gases become less soluble. If a diver ascends too rapidly, the gases can form bubbles in the blood, causing decompression sickness (DCS). To avoid DCS, divers must ascend slowly or make decompression stops. When preventive measures fail, divers with DCS are often treated with hyperbaric oxygen therapy in pressurized chambers called decompression chambers. These chambers provide high-pressure oxygen to help the body eliminate the bubbles and alleviate symptoms.