Is Hyperbaric Oxygen Safe? Real Risks and How the OZ-150 Manages Them

The three real risks

Hyperbaric medicine has been in clinical use for over 60 years. The safety record is strong, but the risks are specific and worth understanding:

• Fire. Oxygen-rich environments are flammable. This is why rigid chambers enforce strict oxygen-fraction limits inside the cabin, forbid personal electronics and cosmetics, and have manual vents.
• Barotrauma. Pressure changes can damage ears, sinuses or lungs if the patient cannot equalize. This is managed through gradual pressurization (5–8 minutes), patient screening and trained supervision.
• Decompression injury. Coming up too fast is the most common operator error. A rigid chamber's controller enforces a slow, controlled ascent.

How the OZ-150 manages them

The OZ-150 carries a pressure relief valve that opens automatically above rated pressure, a manual emergency vent staff can reach from outside, audible and visible alarms for over-pressure or power loss, and continuous oxygen monitoring that keeps cabin O2 fraction within safe limits. The door uses a double-seal lock — it cannot open accidentally under pressure.

What clinics should still do

• Screen every patient for contraindications (see our contraindications article).
• Train staff on pressurization, emergency vent and O2 safety before the first patient.
• Ban lighters, phones, oils and synthetic fabrics inside the cabin.
• Run a weekly pressure and seal check (20 minutes — see maintenance article).

The honest bottom line

HBOT is not risk-free, but it is far safer than clinics assume when they first read horror stories from 1970s multiplace chambers. A modern single-person rigid unit, run by trained staff, has an excellent safety record. The biggest safety risk in practice is not the chamber — it is an untrained operator.