Your first HBOT session: what to expect
If you've never been in a hyperbaric chamber, the unknown can feel bigger than the experience itself. Here's how a typical first visit goes.
Before you arrive
- Health screening. Expect a questionnaire about your health, medications and recent illnesses. Some conditions mean you should wait or skip HBOT (see Who should not do HBOT). Be honest; it's for your safety.
- Clothing. Wear loose, comfortable cotton clothes. Many centers provide cotton scrubs.
- Skip the products. Avoid lotions, oils, hair products, perfume and makeup on the day. Oil-based products are a fire-safety concern in an oxygen-rich environment (more in Fire safety in hyperbaric chambers).
- Eat lightly. A light snack beforehand is a good idea. A full stomach can feel uncomfortable during pressure changes.
When you get there
Staff will review your screening, explain how the chamber works and show you how to equalize your ears. You'll leave your phone, keys, jewelry and anything electronic outside.
Pressurizing (about 5–15 minutes)
As the pressure rises, you'll feel fullness in your ears, just like a plane descending. Swallowing, yawning or gently pinching your nose and blowing helps them "pop." If your ears hurt, tell the operator right away; they can pause or slow down. Our guide Ear pressure in the chamber has techniques.
The chamber may also feel a little warm while it pressurizes. This is normal and passes.
The session (around 60 minutes)
Once you're at pressure, the hard part is over. Most people rest, listen to music piped into the chamber, read, or nap. You can talk with the operator at any time.
Coming back up
Depressurizing feels like a plane climbing. Your ears may pop on their own. Then the door opens and you step out.
Afterwards
Most people go straight back to their day. Some feel relaxed or a bit tired; some notice mild ear fullness for a short while. If you have ear pain, sinus pain or anything unusual that doesn't settle, contact your doctor.
A few honest tips
- If you're nervous about enclosed spaces, mention it. Clear acrylic chambers and seated hard-shell chambers can feel much more open.
- You're in control. You can ask to stop at any point.
- Ask questions. A good team is happy to explain everything twice.