What preparations should the patient make before entering the chamber?
1. Before each hyperbaric oxygen session, proactively inform the hyperbaric oxygen chamber medical staff of any changes in your condition. If you experience any discomfort during treatment, promptly notify the medical staff so that necessary observation, examination, or intervention can be provided.

2. Prior to entering the hyperbaric oxygen chamber, wear the designated chamber gown and change into 100% cotton undergarments. Do not wear clothing made from synthetic fibers (e.g., spandex, acrylic, nylon) or wool, as these materials may generate static electricity and sparks.

3. Flammable, explosive, or electronic items—including matches, lighters, car keys, mobile phones, battery-powered toys, and gasoline—are strictly prohibited inside the oxygen chamber. Wearing watches, hearing aids, fountain pens, and similar items is also discouraged, as they may be damaged during pressurization.

4. Eat a regular meal before entering the chamber. Avoid consuming gas-producing foods prior to treatment—such as carbonated beverages, soy products, and radishes—and empty your bladder and bowels before entering the chamber.