What should be done if a diver experiences DCS symptoms after surfacing?

When a diver surfaces and exhibits symptoms of decompression sickness (DCS), it is crucial to contact emergency medical services immediately. DCS can have serious and potentially life-threatening consequences, and prompt medical intervention is essential. Emergency responders are trained to handle such situations and can provide the necessary care, including transportation to a facility equipped to treat DCS, such as a hyperbaric chamber.

While encouraging deep breathing, providing food, or keeping the diver warm may seem supportive, these actions do not address the critical nature of DCS. Deep breathing may help with relaxation but does not alleviate the symptoms or treat the condition. Food may not be appropriate, especially if the diver is experiencing nausea or other gastrointestinal issues. Keeping the person warm could provide some comfort, but it does not substitute for the urgent and specialized treatment that is required for DCS. Thus, contacting emergency services is the most appropriate and effective response.